名稱:基于PLC和觸摸屏控制的變頻恒壓供水系統
1引言
隨著3c技術(計算機、通信、控制)和變頻技術的不斷發展，在居民小區生活用水、工業用水、各類自來水廠、大型廠礦和消防用水等供水系統中，原來均是采用水塔、高位水箱等設備，這些設備不但占地廣、投資大，而且越來越不能滿足現代化的供水要求。另一方面，采用傳統的方法很難保證供水的實時性，并且由于水泵是采用zui大供水量設計的，由于用水高峰時間短，很容易造成能源的浪費以及由于管網壓力過大而引起的管網損壞。本文以永城煤電集團水廠的控制系統為例，介紹一種基于Plc和觸摸屏控制的恒壓供水系統。
2系統簡介
永城煤電集團水廠變頻恒壓供水系統由Plc控制器、兩臺變頻調速器、軟啟動器、觸摸屏顯示器、交流接觸器、熱繼電器、壓力變送器、水位變送器、流量變送器等其他電控設備以及4臺75kw水泵和一臺45kw的小水泵組成，如圖1所示。

圖 1恒壓供水系統圖
在供水系統的蓄水池中安裝水位變送器，在總出水管安裝壓力變送器和流量變送器，檢測出水位、壓力和流量，轉換成4~20ma的信號，輸入到Plc的模擬量輸入模塊，將檢測到的壓力信號和通過觸摸屏設置的壓力經過Pid運算，通過控
制變頻器的輸出頻率來調整水泵電機的轉速，以達到保持水壓的恒定；同時通過水位檢測，根據水位的高低來開啟水源井的多少和調節反滲透系統的產水能力。同時，在觸摸屏顯示器上可以顯示各個電機的電流、頻率、水位、水壓、工頻和變頻運行的時間以及各泵的運行狀態。系統信息還可以通過企業的Intranet網發布到網絡上，通過網絡進行系統的遠程診斷和控制。
3控制對象
根據永城煤電集團水廠供水系統現場的實時情況，控制水廠現場設備(泵、閥門等)的開、關、停、運行；電磁閥的開啟、關閉；各水源井的開啟、停止；變頻器的啟動/停止，以實現水廠恒壓供水的自動控制。
4系統工作原理
該系統具有手動和自動兩種運行方式：
4.1手動運行方式
選擇手動運行方式時，根據需要，通過按啟動和停止按鈕，來控制各水泵。這種方式只在系統出現故障時使用。
4.2自動運行方式
(1)啟動程序
在自動運行時，首先檢測5臺泵是否有泵出現故障，如果1＃泵出現故障，則通過觸摸屏在線修改該水泵的狀態，把1＃泵設為故障狀態，則系統啟動時，自動不啟動1＃泵。其次檢測蓄水池水位，如果符合要求，
1＃泵也*，開始啟動真空泵抽真空，如果滿足要求，則1＃泵變頻交流接觸器吸合，電機和變頻器連通，同時打開1＃泵的電磁閥，通過檢測壓力的大小，Plc經過Pid運算，此時變頻器的輸出頻率從0hz開始上升，如果壓力不夠，則上升到50hz，延時后，通過軟啟動器，將1＃泵切換到工頻，再啟動2＃泵，依次類推，直到出水壓力達到設定壓力。
(2)水泵切換程序
根據流量傳感器檢測到的流量的大小，如果出水量減少，出水壓力過大，則Plc控制變頻器的輸出頻率，減少出水量來穩定出水壓力。如果變頻器的輸出頻率在20hz，此時Plc開始計時，如果出水壓力降低，則放棄計時；如果出水壓力一直高于設定壓力，到一定時間后，則根據先投先停的原則，Plc將先關閉正在運行的投入時間zui長的泵的電磁閥，再關閉該泵，直到出水壓力達到設定值。
(3)啟動小功率泵
對于永城煤電公司居民生活用水來說，其屬于用水時段性很強的系統，因此在5臺水泵中，1＃-4＃泵為75kw，5＃泵為45kw。因此，當在用水低谷時，一臺45kw的小功率泵就足可以保持供水壓力，此時，就可以通過變頻運行5＃小功率泵，使其工作在低頻狀態，就可以維持供水系統的水壓穩定。
(4)遠程控制和故障診斷
該控制系統通過Plc的通訊模塊Cp340向設在局后勤處的上位機發送信息，兩者之間通訊采用Rs-485方式。當在上位機上發現有故障如蓄水池水位過低時，可以通知多開啟水源井和反滲透裝置，以提高蓄水池水位，防止因水位過低造成的水泵干抽現象。由于系統的上位機可以進行網絡發布，當出現故障，而現場人員無法解決時，通過遠程診斷功能，由廠家幫助處理。
5控制系統硬件配置及軟件編程
5.1硬件配置
(1) Plc的配置
可編程控制器采用Siemens的S7-300系列Cpu-314主機，1個電源模塊，2個32位I/O模塊，2個16位輸出模塊，2個12位Ad模塊，1個12位Da模塊和一個Cp340模塊。Cp340和上位機之間通過Rs-485進行通信。
(2)觸摸屏
觸摸屏選用Siemens生產的Tp270系列，它自身具有豐富的操作系統，可以方面的通過串行通訊與編程器通信，也可以和Plc通過Mpi網進行通信。通過觸摸屏可以實時顯示電機電流、管網壓力、水位、流量、各水源井工作情況以及各種故障信息；還可以通過觸摸屏對Plc進行在線控制。
(3)變頻器及控制方式選擇
在本系統中，根據冗余設計原則，采用2個三菱供水變頻器，以在發生故障時相互備用。由Plc開關量輸出控制變頻器的啟動/停止。
5.2軟件編程
(1) Plc編程
Plc從軟件配置上有系統程序和用戶程序。系統程序裝配在Cpu模塊上隨硬件的產品而來。用戶程序是編程器編好程序后輸入到可編程序控制器的存儲模塊，程序是采用塊式結構形式，共有5種形式：組織塊(0b)、程序塊(Pb)、功能塊(Fb)、數據塊(Db)、順序塊(Sb)(本系統未用)。因此，在Plc軟件中使各種功能的程序模塊通過主程序有機的結合起來。故Plc程序主要解決現場各泵的啟動程序、切換程序、啟動小功率泵；模擬量的處理；與上位機和觸摸屏通信數據的處理功能等。
(2)上位機程序
上位機使用Vb編寫通信程序和建立數據庫。通信程序發出的命令幀格式要*符合Siemens公司Plc的Rs-485通信協議；對Plc發回的響應幀，上位機必須進行拆裝、識別，才能正確的分離出交換數據和有用的狀態信息。
(3)觸摸屏程序
觸摸屏程序主要有主畫面、參數設置、供電回路、反滲透、實時曲線、報表統計、故障維護等畫面組成，其結構如圖2所示。

圖2觸摸屏程序結構
5結束語
在供水系統中采用基于Plc與觸摸屏控制的變頻恒壓供水系統，可以根據實際需要水壓的變化自動調節水泵的轉速或加減速，實現恒壓供水，降低能耗；還可以延長主泵電機的使用壽命。由于采用了雙變頻器，在一臺變頻器出現故障時，系統可以自動的切換到另一臺變頻器，基本可以保持不間斷的恒壓供水，具有一定的*性。
目前，該系統在永城煤電集團水廠經過一年多的運行后，運行狀況良好，達到了預期的設計要求，節能*，受到了用戶的好評，具有很好的應用前景。

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IBM 46M6140 Emulex BladeCenter 8Gb FC Fibre Channel HBA CIOv HS22 HS22V HX5 HS23
IBM 46M6140 Emulex BladeCenter 8Gb FC Fibre Channel HBA CIOv HS22 HS22V HX5 HS23
IBM 44X1945 BladeCenter 8Gb FC Fibre Channel HBA CIOv HS22 HS23 HS22V HX5
IBM 42C3724 IBM BladeCenter HT I/O module interposer All models
IBM 41L5103 IBM 7025 I/O PLANAR MODULE
IBM 39Y9282 Cisco 4Gb Fibre Channel Switch Module 10 port 
IBM 39Y9281 Cisco 4Gb Fibre Channel Switch Module 10 Port 
IBM 10N7270 28D8 2-Port Loop Remote IO Adapter 10N7269
IBM 05J8907 IBM 7025 I/O PLANAR MODULE
IAD2431-1T1E1 CISCO W/1 T1/E1 PORT PBX AND 1 T1/E1 WAN PORT
IAD2431-1T1E1 CISCO W/1 T1/E1 PORT PBX AND 1 T1/E1 WAN PORT
IAD2431-16FXS Cisco Integrated Access Device W/ 16PORT FXS
IAD2431-16FXS Cisco Integrated Access Device W/ 16PORT FXS
i7-3930K Overclock 32G2TBLR2X1?20G SSD Raid 2XGTX670/2G 1KW Extreme Gaming PC
i7-3930K Overclock 32G 2T BLR2X120G SSD Raid HD7870/2G Ultimate Gaming PC
i7-3930K 6xCore Overclock 32G 2T BLR120G SSD GTX680/2G Ultimate Gaming PC
i7-3930K 6xCore Overclock 32G 2T BLR120G SSD GTX670/2G Ultimate Gaming PC
i7-3930K 6xCore 3.2G Asus P9X79 Pro Mobo 700W Water Top CPU Barebone Computer
i7-3820 4xCore 3.6GHz Barebone Computer
i7-3820 4xCore 3.6GHz 32G 1TB 120G SSD GTX680/2G Best Home/Business Computer
i7-3820 4xCore 3.6GHz 32G 1TB 120G SSD GTX670/2G Best Home/Business Computer
i7-3820 3.6GHz 64G 2TBx4 120G SSD HD6570/1G Best Home/Business PC
i7-3820 3.6GHz 32G 1TBx2 2X120G SSD Raid HD7970/3G Best Home/Business PC
i7-3770K Asus P8Z77-M Mobo 550W Barebone Computer Support Overclocking
i7-3770K Asus P8Z68-V LX Mobo550W Barebone Computer Support Overclocking
i7-3770K 32G 3TBLR2X120G SSD Raid GTX680/2G Overclock Game/Business Computer
i7-3770K 32G 1TBLR128G SSD HD7970/3G Overclock Gaming/Busines?s Computer
i7-3770K 16G 1TBLR120G SSD GTX680/2G Overclock Gaming/Busines?s Computer
i7-3770K 16G 1T128G SSD GTX560Ti/1G Overclock Gaming/Busines?s Computer
i7-3770K 16G 1T128G SSD GTX560/1G 700W Overclock Gaming/Busines?s Computer
i7-3770K 16G 1T120G SSD GTX670/2G Water Cl Overclock Gaming/Busines?s Computer
i7-3770 Quad Core 8G 500G 60G SSD HD6570/1G Desktop Gaming/Home/bu?siness PC
i7-3770 Quad Core 8G 1TB HD 60G SSD GT640/2G Desktop Gaming/Home/bu?siness PC
i7-2700K 32G 2TB 2X128G SSD Raid GTX680/2G Overclock Gaming/Busines?s Computer
i7-2700K 32G 1TBLR120G SSD HD7970/3G Water Overclock Gaming/Busines?s Computer
i7-2700K 16G 1T120G SSD GTX680/2G Water Cl Overclock Gaming/Busines?s Computer
i7-2700K 16G 1T120G SSD GTX670/2G Water Cl Overclock Gaming/Busines?s Computer
i7-2600 Quad Core 8G DDR3 60G SSD HD6570/1G Desktop Gaming/Home/bu?siness PC
i7-2600 Quad Core 8G 500G 120G SSD GT440/2G Desktop Gaming/Home/bu?siness PC
i7-2600 16G 1TB 120G SSD GTX570 700W Desktop Great Gaming/Home/bu?siness PC
i5-3570K 8G/1600 500G HD 60G SSD HD7750/1G Overclock Gaming/Busines?s Computer
i5-3570K 8G/1600 500G HD 60G SSD GT640/2G Overclock Gaming/Busines?s Computer
i5-3570K 8G/1600 1TB 60G SSD GTX560/1G Overclock Gaming/Busines?s Computer
i5-3570K 8G/1600 1TB 128G SSD HD7850/2G Overclock Gaming/Busines?s Computer
i5-3570K 8G/1600 1TB 128G SSD HD7850/2G Overclock Gaming/Busines?s Computer
i5-3450 Quad Core 8G 500G 60G SSD HD6570/1G Desktop Gaming/Home/bu?siness PC
i5-3450 Quad Core 8G 500G 60G SSD HD6570/1G Desktop Gaming/Home/bu?siness PC
i5-2500K 8G/1600 550W Barebone Computer Support Overclocking Great Saving
i5-2500K 8G/1600 500G HD6570/1G Overclock Gaming/Home/Bu?siness Computer
i5-2500K 8G/1600 1TB 60G SSD HD7770/1G Overclock Gaming/Home/Bu?siness Computer
i5-2500K 8G/1600 1TB 60G SSD GTX560/1G Overclock Gaming/Home/Bu?siness Computer
i5-2500K 8G/1600 1TB 60G SSD GTX560/1G Overclock Gaming/Home/Bu?siness Computer
i5-2500K 550W Barebone Computer Support Overclocking Great Saving
i5-2500K 16G 1TB 60G SSD GTX560Ti/1G Overclock Gaming/Home/Bu?siness Computer
i5-2500K 16G 1TB 128G SSD HD7850/2G Overclock Gaming/Home/Bu?siness Computer
i5-2500K 16G 1TB 120G SSD HD7870/2G Overclock Gaming/Busines?s Computer
i5-2500 Quad Core 8G 500G 60G SSD HD6570/1G Desktop Gaming/Home/bu?siness PC
i5-2500 Quad Core 8G 500G 60G SSD GT430/1G Desktop Gaming/Home/bu?siness PC
i5-2500 16G 1T 128G SSD HD7870/2G 700W Desktop Great Gaming/Home/bu?siness PC
i5-2500 16G 1T 128G SSD HD7850/2G 700W Desktop Great Gaming/Home/bu?siness PC
i5-2500 16G 1T 128G SSD HD7850/2G 700W Desktop Great Gaming/Home/bu?siness PC
I2C-TRN I2C Voltage Translator BASIC STAMP PIC ATMEL
I/O ROM Module 5061-5232 RARE HP-75C HP-75D Computer
I/O MODULE REMOTE I/O  1 8 1O 805-772-10 185-255-00
I/O Module JAU-4W-S2 _ JAU4WS2
HWIC-8A CISCO 8-Port Async High-Speed WAN- 
HWIC-8A CISCO 8-Port Async High-Speed WAN- 
HWIC-4T1/E1 Cisco T1/E1 Card Fast Shiping
HWIC-4T1/E1 CISCO HWIC-4T1/E1 CISCO 4-Port T1/E1 HWIC- 
HWIC-4T1/E1 CISCO HWIC-4T1/E1 CISCO 4-Port T1/E1 HWIC- 
HWIC-4T Cisco 4-Port Serial High-Speed WAN Interface Card
HWIC-2FE Cisco 2-Port Fast Ethernet High-Speed 
HWIC-2FE Cisco 2-Port Fast Ethernet High-Speed 
HWIC-1GE-SFP Cisco Gigabit Ethernet HWIC with one SFP slot
HWIC-1GE-SFP Cisco Gigabit Ethernet HWIC with one SFP slot
HWIC-1FECisco 1-Port Fast Ethernet High-Speed WAN Interface Card
HWIC-1DSU-T1 CISCO 1-PORT T1 DSU/CSU WAN INTERFACE CARD
HWIC-1DSU-T1 CISCO 1-PORT T1 DSU/CSU WAN INTERFACE CARD
HWIC-16A CISCO 16-Port Async High-Speed WAN Interface Card
HWIC-16A CISCO 16-Port Async High-Speed WAN Interface Card
HTT ENERGY R901 1828 TYPE 887 771 TEMPERATURE CONTROL
HTT ENERGY R901 1828 TYPE 887 721 TEMPERATURE CONTROL
HTPC COMBO In i5-2500K CPU 2GB DDR3 RAM GIGABYTE SATA6 USB3 CFX Motherboard
HTPC COMBO In i5-2400 CPU 2GB DDR3 RAM GIGABYTE SATA6 USB3 CFX Motherboard
HTPC COMBO In i3-2125 CPU 2GB DDR3 RAM GIGABYTE SATA6 USB3 CFX Motherboard
HP-UX 11i v2 11.23 or v3 11.31 loaded
HP-UX 11i v2 11.23 or v3 11.31 loaded
HP/Agilent N4010A Wireless Connectivity Test Set WifiMIMO
HP/Agilent N4010A Wireless Connectivity Test Set BTWifiMIMO
HP/Agilent N4010A Wireless Connectivity Test Set
HP/Agilent N2263A 32-Bit Digital Input/Output Module
HP/Agilent 3499B 2- Switch/Control Mainframe
HP/Agilent 16903A Logic Analysis System
HP/Agilent 16902A Logic Analysis System
HP Z420 B2B96UT B2B96UTABA Workstation E5-1603 2.80 GHz 4GB 500GB Windows 7 
HP Z420 B2B96UT B2B96UTABA Workstation E5-1603 2.80 GHz 4GB 500GB Windows 7
HP Z420 B2B96UT B2B96UTABA Workstation E5-1603 2.80 GHz 4GB 500GB Windows 7
HP Z420 B2B96UT B2B96UTABA Workstation E5-1603 2.80 GHz 4GB 500GB Windows 7
HP Z210 VA765UTABA Workstation i3-2100 3.10GHz 2GB 250GB Windows 7 Professional
HP Z210 VA765UTABA Workstation i3-2100 3.10GHz 2GB 250GB Windows 7 Professional
HP Z210 VA765UTABA Workstation i3-2100 3.10GHz 2GB 250GB Windows 7 Professional
HP Z210 VA765UTABA Workstation i3-2100 3.10GHz 2GB 250GB Windows 7 Professional
HP Z210 VA750UTABA Workstation E3-1240 3.30GHz 4GB 500GB Windows 7
HP Z210 VA750UTABA Workstation E3-1240 3.30GHz 4GB 500GB Windows 7
HP Z210 VA750UTABA Workstation E3-1240 3.30GHz 4GB 500GB Windows 7
HP Z210 VA750UTABA Workstation E3-1240 3.30GHz 4GB 500GB Windows 7
HP XW9300 K8WE S2895 DUAL CPU 940 SERVER MOTHERBOARD
HP XL425AT t5740e Thin Client In Atom N280 1.66 GHz Processor 2 GB RAM/4
HP X2 Module 10GB 4-Ports For 5400 Series Switches J8707A Module
HP  08/2015
HP  08/2015
HP  08/2015
HP Virtual Connect Flexfabric 10GB/24-Ports Module 571956-B21
HP Virtual Connect Flex10 Switch 8-Ports c7000 c3000 455880-B21 Hp 
HP VIRTUAL CONNECT FLEX-10 10GB ETHERNET MODULE FOR C-CLASS 455880-B21
HP Virtual Connect Flex-10 10Gb Ethernet Module 8 Ports Refurbished
HP VIRTUAL CONNECT ETHERNET MODULE 4 X 10/100/1000BAS?E-T UPLINK 1 X 447047B21
HP Virtual Connect 4GB Fibre Channel Module c-Class Blade 409513-B22
HP Virtual Connect 455880-B21 8-Ports Switch
HP Ultrium 460 LTO 2 Tape Drive Module Q1512B 400GB
HP TouchSmart 610-1031f Desktop Beats Edition- Wireless Mouse  Keyboard
HP Touchsmart 520-1047 All-in-one PC In Core i5-2400S 2.5GHz SuperMulti DVD B
HP StorageWorks Ultrium 460 LTO-2 Q1512B back up tape drive internal model
HP StorageWorks Ultrium 460 LTO-2 External Tape Drive for data backup Q1520A
HP StorageWorks Ultrium 232 Internal Back-up tape Drive 5.25" DW064A With Cable
HP STORAGEWORKS STORAGE ARRAY ENCLOSURE SCSI 14BAY 3U 302970B21
HP StorageWorks SSL1016 Ultrium 460 Tape Autoloader
HP StorageWorks P2000 Modular Smart Array 12 Bay SAS Drive Chassis AP838A Re
HP StorageWorks MSL2024 1-drive LTO-4 Ultrium 1760 SCSI Tape Library AJ817A
HP STORAGEWORKS MSA70 MODULAR SMART ARRAY 418800-B21 RAILS 25 x 73gb 15k SAS
HP STORAGEWORKS MSA70 MODULAR SMART ARRAY 418800-B21 RAILS 25 x 73gb 10k SAS
HP STORAGEWORKS MSA70 MODULAR SMART ARRAY 418800-B21 RAILS 25 x 300GB 10k SATA
HP STORAGEWORKS MSA70 MODULAR SMART ARRAY 418800-B21 RAILS 25 x 146gb 10k SAS
HP STORAGEWORKS MSA70 MODULAR SMART ARRAY 418800-B21 22.5TB STORAGE P800 RAILS 
HP STORAGEWORKS MSA60/MSA70 DUAL DOMAIN I/O MODULE AG779A
HP StorageWorks MSA60 Storage Array 12 x 600GB 15K SAS / 3 Year  
HP StorageWorks MSA60 Storage Array 12 x 500GB SATA 6TB / 3 Year  
HP StorageWorks MSA60 Storage Array 12 x 450GB 15K SAS / 3 Year  
HP StorageWorks MSA60 Storage Array 12 x 3TB SAS 36TB / 3 Year  
HP StorageWorks MSA60 Storage Array 12 x 300GB 15K SAS / 3 Year  
HP StorageWorks MSA60 Storage Array 12 x 300GB 10K SAS / 3 Year  
HP StorageWorks MSA60 Storage Array 12 x 2TB SAS 24TB / 3 Year  
HP StorageWorks MSA60 Storage Array 12 x 1TB SAS 12TB / 3 Year  
HP StorageWorks MSA60 Storage Array 12 x 146GB 15K SAS / 3 Year  
HP StorageWorks MSA60 Storage Array 12 x 1.5TB SATA 18TB / 3 Year  
HP STORAGEWORKS MSA50 MODULAR SMART ARRAY 364430-B21 9TB STORAGE With RAILS
HP STORAGEWORKS MSA50 MODULAR SMART ARRAY 364430-B21 10 x 73GB 15K SAS RAILS
HP STORAGEWORKS MSA50 MODULAR SMART ARRAY 364430-B21 10 x 73GB 10K SAS RAILS
HP STORAGEWORKS MSA50 MODULAR SMART ARRAY 364430-B21 10 x 300GB 10K SATA RAILS
HP STORAGEWORKS MSA50 MODULAR SMART ARRAY 364430-B21 10 x 300GB 10K SAS RAILS
HP STORAGEWORKS MSA50 MODULAR SMART ARRAY 364430-B21 10 x 146GB 10K SAS RAILS
HP Storageworks MSA2000 Disk Array-481321-0?01-12x450GB 15K 5.4TB-481341?-001
HP StorageWorks EVA4400 Dual Controller HSV300 AG637B
HP StorageWorks Enclosure 4400 302970-B21 Server
HP StorageWorks Enclosure 4400 302970-B21 Server
HP StorageWorks EML E-series Tape Library LTO 4 FC Ultrium 1840AH682A
HP StorageWorks EML E-series Tape Library LTO 4 FC Ultrium 1840459863-00?1
HP StorageWorks Disk Enclosure D2600 AJ940A 12 bays 
HP StorageWorks D2600 Storage Array 12 x 600GB 15K SAS / 3 Year 
HP StorageWorks D2600 Storage Array 12 x 4TB 6Gb/s SATA 48TB / 3 Year  
HP StorageWorks D2600 Storage Array 12 x 450GB 15K 6Gb/s SAS / 3 Year  
HP StorageWorks D2600 Storage Array 12 x 3TB SATA 36TB / 3 Year  
HP StorageWorks D2600 Storage Array 12 x 3TB 6Gb/s SAS 36TB / 3 Year  
HP StorageWorks D2600 Storage Array 12 x 300GB 15K 6GB/s SAS / 3 Year 
HP StorageWorks D2600 Storage Array 12 x 2TB SATA 24TB / 3 Year  
HP StorageWorks D2600 Storage Array 12 x 2TB SAS 6Gb/s 24TB / 3 Year  
HP StorageWorks D2600 Storage Array 12 x 1TB SATA 12TB / 3 Year 
HP StorageWorks D2600 Storage Array 12 x 1TB 6Gb/s SAS 12TB / 3 Year  
HP StorageWorks 3U Rack-mount SAS Kit AG576A
HP STORAGEWORKS 2000FC MODULAR SMART ARRAY CONTROLLER AJ744A
HP Smart Buy Z210 VA814UTABA i3-2120 3.30 GHz 2GB 500GB Windows 7 
HP Smart Buy Z210 VA814UTABA i3-2120 3.30 GHz 2GB 500GB Windows 7
HP Smart Buy Z210 VA814UTABA i3-2120 3.30 GHz 2GB 500GB Windows 7
HP Smart Buy Z210 VA814UTABA i3-2120 3.30 GHz 2GB 500GB Windows 7
HP Smart Buy Z200 VA822UTABA E3-1240 3.30GHz 8GB 1TB Windows 7 
HP Smart Buy Z200 VA822UTABA E3-1240 3.30GHz 8GB 1TB Windows 7
HP Smart Buy Z200 VA822UTABA E3-1240 3.30GHz 8GB 1TB Windows 7
HP Smart Buy Z200 VA822UTABA E3-1240 3.30GHz 8GB 1TB Windows 7
HP Smart Array 487204-B21 P812 SAS RAID Controller for ProLiant DL160 G6 DL165
HP Slate 2 Z670 Tablet PC 1.5Ghz 2GB 64GB SSD Wi-Fi MULTITOUCH WIN7 A6M62AA
HP SignagePlayer mp8200 mp8200s USDT i5 2.5Ghz 4GB 250GB WiFI A7K82UT
HP SignagePlayer mp8200 mp8200s USDT i5 2.5Ghz 2GB 160GB WiFI XZ948UA
HP SignagePlayer mp8200 mp8200s USDT i3 3.1Ghz 4GB 250GB WiFI A7K78UT
HP SignagePlayer mp8200 mp8200s USDT i3 3.1Ghz 4GB 250GB WiFI A7K72UT
HP SE1101 Dual L5420 In Xeon Quad Core 2.5Ghz 1U Server
HP SAN MODULE 16 X EXPANSION  538113B21
HP RX2600 Itanium Server A9372C A6870B 1.3GHz HP-UX 11i
HP RX2600 Itanium Server A6870A A6873B RAID HP-UX 11i
HP rp5800 In i3 XZ883UA POS
HP QW801AAABC OMNI 27-1054 27" All in One PC i5-2400S6GB1?TBBlu-RayInt?el HD
HP Q3653-67901 Formatter BASE MODELS ONLY Q3653-67901 
HP Q3653-67901 Formatter BASE MODELS ONLY Q3653-6790
HP Prourve 4208-68G-4SFP VL 5U Switch 68-Ports 1000 J9030AABA
HP Promo 6200 Pro A2W41UTABA Desktop i5-2500 3.30GHz 4GB 250GB Windows 7
HP Promo 6200 Pro A2W41UTABA Desktop i5-2500 3.30GHz 4GB 250GB Windows 7
HP Promo 6200 Pro A2W41UTABA Desktop i5-2500 3.30GHz 4GB 250GB Windows 7
HP Promo 6200 Pro A2W41UTABA Desktop i5-2500 3.30GHz 4GB 250GB Windows 7
HP ProLiant ML350 G6 487932-001 Server ReSeal
HP ProLiant ML350 G6 487932-001 Server ReSeal
HP Proliant DL580 G7 Server two 8-core E7-4830 64gb  p/n 643065-001
HP Proliant DL580 G7 Server two 8-core E7-4830 256gb 4x300gb 643065-001
HP Proliant DL580 G7 Server two 8-core E7-4830 128gb 4x300gb 643065-001
HP Proliant DL580 G7 Chassis HP  02/2015 In Xeon E7-4800 model
HP PROLIANT DL360 G4P RM SERVER XEON 2.8GHZ 1GB RAID/SERIAL ATA 408579001
HP ProLiant DL100 G2 AE444A server with 2 X HP StorageWorks MSA20 3TB
HP PROLIANT C7000 4 x BL460c G1  4 x BL460c G6  4 x BL680c G5 160 CORE CPU
HP PROLIANT C7000 16 x BL460C G6 2 x QUAD CORE X5550 2.66GHZ 96GB 2x73GB 10K SAS
HP PROLIANT C7000 16 x BL460C G6 2 x QUAD CORE X5550 2.66GHZ 96GB 1.8TB 10K SAS
HP PROLIANT C7000 16 x BL460C G6 2 x QUAD CORE X5550 2.66GHZ 64GB 2x73GB 10K SAS
HP PROLIANT C7000 16 x BL460C G6 2 x QUAD CORE X5550 2.66GHZ 48GB 2x73GB 10K SAS
HP PROLIANT C7000 16 x BL460C G6 2 x QUAD CORE X5550 2.66GHZ 32GB 2x73GB 10K SAS
HP PROLIANT C7000 16 x BL2x220c G5 4 x QUAD CORE XEON E5450 3.0GHz 32GB 2x 120GB 
HP PROCURVE SWITCH ZL 24P MINI-GBIC MODULE J8706AABA
HP PROCURVE SWITCH YL 10GBE CX4-PORTS 2P X2 MODULE J8694A
HP PROCURVE SWITCH VL 20P GIG-T4 SFP MOD J9033A
HP Procurve Switch J4878A XL MINI-GBIC Module 
HP ProCurve Switch FL 10-Ports 100/1000BaseT Interface Module J8734A
HP ProCurve Switch FL 10-Ports 100/1000BaseT Interface Module J8734A
HP PROCURVE SWITCH 5400ZL 24-PORTS MINI-GBIC MODULE J8706A
HP ProCurve Routing Switch 9408sl 15U Switch 10-GbE 8 Xslots J8680A
HP PROCURVE NETWORKING 10GBE X2-SC LR OPTIC J8437A
HP PROCURVE MODULE AL 2-PORTS SFP 10 GBE J9008A
HP ProCurve J9310A 24-Ports 3500-24G-PoE Yellow Switch Layer 3 Switch
HP ProCurve J8692A 24-Ports Rack-mountab?le Switch Managed 
HP ProCurve J4864A Switch gl Transceiver Module 2 x Gigabit-SX Fiber J4131A
HP Procurve J4862A 24-port 10/100 Ethernet GL Module 
HP ProCurve J4820A 10/100-TX XL MODULE 
HP ProCurve Access Control Server 745wl Security Appliance 2U J9038A
HP ProCurve Access Control Server 745wl Security Appliance 2U J9038A
HP ProCurve 9400sl 60-Ports 10/100/1000-T Expansion Module J8688A
HP ProCurve 9400sl 40-Ports Open Slots Module Expansion J8684A
HP PROCURVE 9300 EXPANSION MODULE ETHERNET 10/100MBPS 24-PORTS J4140AABA
HP ProCurve 8100fl 1-Port 10-GbE X2 Interface Module J8736A
HP ProCurve 8100fl 1-Port 10-GbE X2 Interface Module J8736A
HP ProCurve 8100fl 1-Port 10-GbE X2 Interface Module J8736A
HP ProCurve 5304XL Modular 4  chassis J4850A  2 x Power Supplies J4839A
HP PROCURVE 4-PORTS 10GBE SFP ZL MODULE EXPANSION MODULE 4-PORTS J9309A
HP Procurve 4208vl-72GS Ethernet Switch PN J9030AABA 
HP ProCurve 4204vl-48GS Ethernet Switch PN J9064AABA 
HP PROCURVE 4204VL-48GS ETHERNET SWITCH 44 X 10/100/1000BAS?E-T LAN J9064AABA J9
HP Procurve 4108GL J4865A 10/100 Network Switch 144 ports  Gigabit Trans
HP ProCurve 3400cl-24G 20-Port Gigabit Ethernet Network Switch J4905A 
HP Procurve 2650 Switch J4899A 2GB PORT
HP ProCurve 24 Port 10/100TX PoE 5300 XL Module J8161A With ESP Cable 5092-0774
HP Pro 6300 SFF Core i7 3770 1TB HDD 4GB RAM B5N14UTABA 3 Years 
HP Point of Sale System rp5800 XZ956UTABA Desktop i3-2120 3.30GHz 4GB 250GB 
HP Point of Sale System rp5800 XZ956UTABA Desktop i3-2120 3.30GHz 4GB 250GB
HP Point of Sale System rp5800 XZ956UTABA Desktop i3-2120 3.30GHz 4GB 250GB
HP Point of Sale System rp5800 XZ956UTABA Desktop i3-2120 3.30GHz 4GB 250GB
HP Point of Sale System rp5800 XZ843UTABA Desktop i3-2120 3.30GHz 2GB 250GB 
HP Pavilion Slimline s5731f Desktop PC Dual Core 4GB 750GB Win7 PRO 64
HP Pavilion p6644y Special Edition Desktop PC In Dual-Core 2.8 GHz 4GB 1TB
HP PAVILION HPE H8-1039 QU123AA _2.9GHz _8GB _1TB _WiFi HP AUTHORIZED 
HP Pavilion Elite HPE-510y Desktop PC 6-Core8G1.5T?BTV TunerBlu-Ray?Wireless
HP Pavilion Elite HPE 431F ASRock H55M-LE In i5@3.2ghtz 1tb HD 8gb Ram 
HP Pavilion Asus M5A78L-M LXAthlon II X 4@2.9GHTZ 320gb HD 4gb Ram Win 7
HP P6510y Desktop PC AMD Athlon II X4 2.8GHz 4GB DDR3 Ram 750GB HDD Wi-Fi 
Hp P2000 G3 ReBoxed Enclosure 3 yr 
HP p/n 519320-001 I-O module for D2700 HP AJ941-04402
HP Omni 27-1054 All-in-One Computer 27" Quad i5 2.5Ghz 6G 1TB BluRay QW801AA
HP Omni 27-1054 All-in-One Computer 27" Quad i5 2.5Ghz 6G 1TB BluRay QW801AA
HP NX6325 Business Laptop Factory Refurbished by HP DVDRW 1GB BT XP Prof
HP MSA70 Module Smart Array Enclosure 418800-B21 MSA 70 FREE SHIPPIN IN USA
HP MSA70 Modular Smart Array 25-bay 2u Rack Mount Drive Enclosure Storage
HP MSA70 Modular Smart Array 25-bay 2u Rack Mount Drive Enclosure Storage
HP MSA30 U320 SCSI 14-drive Enclosure 4-port I/O Module 359645-B21 Hp re
HP Module Ethernet 24-Ports 10/100/1000 PoE J8702A
HP MODULE ETHERNET 1GBPS 6-PORTS J4893A
HP MDS600 Dual I/O Module Single Module 455972-001 AP763A 498472-001
HP MDS600 Dual I/O Module Kit 497755-B21 455972-001 AP763A
HP M6412A 4GB Fiber Channel FC I/O module 461494-005
HP M6412A 4GB FC module dual bus 461494-005 AG638-04500
HP LTO-2 Ultrium 448 Tape drive SCSI for data backup DW019A
HP LaserJet P3005 Printer Q7812A Save 200 Q7812AABA
HP LASERJET 8000DN Laser Printer 8000 11 X 17 wide format duplex network warrant
HP LaserJet 2420  Q5956A  Printer Q5956A 
HP Laser Parallel 4300N Printer Q2432A Q2432A 
HP JE374A VCX Single Span VoIP Gateway
HP JD007A E4800-24G Switch 24 ports L4 managed stackable
HP J9637A Expansion Module QUANTITY AVAILABLE
HP J9548A Expansion Module QUANTITY AVAILABLE
HP J9538A Expansion Module QUANTITY AVAILABLE
HP J9537A Expansion Module QUANTITY AVAILABLE
HP J9536A Expansion Module QUANTITY AVAILABLE
HP J9309A ProCurve 4-Port Interface Module QUANTITY AVAILABLE
HP J9008A ProCurve 10GbE SFP Expansion Module QUANTITY AVAILABLE
HP J8735A ProCurve Switch FL 10-Ports 100/1000-T Interface Module
HP J8705A ProCurve Switch 5400zl 20-port 10/100/1004-p?ort Mini-GBIC
HP J4908A ProCurve 22 Port 2 mGBIC Module 4104gl 4108gl
HP Integrity rx6600 Itanium Server AB464A AD132A AB580A
HP HP 5800 2-Ports 10GbE SFP Expansion Module JC092B
HP H3C PROCURVE HP 384 Gbps A7500 Fab Mod w/2 XFP Ports JD193B
HP H3C PROCURVE HP 384 Gbps A7500 Fab Mod w/2 XFP Ports JD193B
HP H3C PROCURVE HP 384 Gbps A7500 Fab Mod w/2 XFP Ports JD193B
HP EXPANSION MODULE 12 X 1000BASE-T LAN 12 X SFP J9637A J9637AABA
HP EVA4000 Starter Kit AH051A Inc. 2x Controllers 8x 146Gb Array 2x SAN Switch 
HP ETHERNET BL-C 10GB SWITCH MODULE 445860B21 445860-B21
HP ETHERNET 10/100/1000MBP?S BLC 10GBPS RACKMOUNT SWITCH 438031B21
HP ETHERNET 10/100/1000MBP?S BLC 10GBPS RACKMOUNT SWITCH 438031B21
HP Envy 14-2070nr Core i5 2.3 GHz 6GB 160GB SSD HDD DVD-RW BLUETOOTH FREE SH
HP EliteBook 8570w B8V82UTABA 15.6" i7-3610QM 2.3 GHz 8GB 500GB Windows 7 
HP EliteBook 8570w B8V82UTABA 15.6" i7-3610QM 2.3 GHz 8GB 500GB Windows 7
HP EliteBook 8570w B8V82UTABA 15.6" i7-3610QM 2.3 GHz 8GB 500GB Windows 7
HP EliteBook 8570w B8V82UTABA 15.6" i7-3610QM 2.3 GHz 8GB 500GB Windows 7
HP EliteBook 8570w B8V81UTABA 15.6" i5-3360M 2.8GHz 8GB 500GB Windows 7
HP EliteBook 8570w B8V81UTABA 15.6" i5-3360M 2.8GHz 8GB 500GB Windows 7
HP EliteBook 8570w B8V81UTABA 15.6" i5-3360M 2.8GHz 8GB 500GB Windows 7
HP EliteBook 8570w B8V81UTABA 15.6" i5-3360M 2.8GHz 8GB 500GB Windows 7
HP EliteBook 8570w B8V72UTABA 15.6" i7-3610QM 2.3GHz 8GB 750GB Windows 7
HP EliteBook 8570w B8V72UTABA 15.6" i7-3610QM 2.3GHz 8GB 750GB Windows 7
HP EliteBook 8570w B8V72UTABA 15.6" i7-3610QM 2.3GHz 8GB 750GB Windows 7
HP EliteBook 8570w B8V72UTABA 15.6" i7-3610QM 2.3GHz 8GB 750GB Windows 7
HP ELITEBOOK 2540P 2.13GHZ IN CORE I7-640LM 4GB 250GB DVD-ROM BW248USRABA
HP ELITEBOOK 2540P 2.13GHZ IN CORE I7-640LM 4GB 250GB DVD-ROM BW248USABA
HP E3800 48PT POE 1000BT  4PT 1GB/10GBE SFP SWITCH
HP E3800 48PT POE 1000BT  4PT 1GB/0GBE SFP SWITCH J9574A
HP E3800 48PT 1000BT  4PT 1GB/0GBE SFP SWITCH J9576A
HP E1452A Terminating 20 Mhz Pattern I/O Module
HP E1451A 20 MHz Pattern I / O Module
HP E1415A Closed Loop Controller VXI Plug-In Agilent
HP DS-MG521-AA 232113-B21 Fibre Storage 6 drives 
HP DL580 G2 QUAD QUAD XEON MP 3GHz/4M 16GB RAM 292GB 4U
HP Digital Signage Player MP8000S In E8400 3.0GHz BW836AWABA SFF
HP DEC 54-30756-02 2P Drawer I/O Expander Module Rev A1
HP Compaq SL199UPABA ELite 8000 SFF 3.0GHz Core 2 DUO E8400 4GB 160GB
HP Compaq Pro 6300 Desktop PC In Pentium 2.8GHz 2GB 250GB HDD B5N03UTABA 
HP Compaq Notebook Nc6400 Core 2 Duo 1.83 G -512 GB Ram 80 GB HDD NC6400 
HP Compaq Thin Client 2533t thin client FF571AT BRAND 
HP Compaq Elite 8300 Desktop In Core i5 3.2GHz 8GB DDR3 500GB HDD DVDRW 
HP Compaq Elite 8200 Small form Factor Desktop Quad Core i7 4GB 1TB DVD 
HP Compaq Elite 8200 Small Form Factor Desktop i7 Quad Core 3.4GHz 4GB 1TB 
HP Compaq Elite 8200 Small Form Factor Desktop i5 Quad Core 3.3GHz 4GB 250GB 
HP Compaq Elite 8200 Small Form Factor Desktop i5 3.1GHz 2GB 250GB DVD-ROM 
HP Compaq Elite 8200 Small Form Factor Desktop i5 3.1GHz 2GB 250GB DVD-ROM 
HP Compaq Elite 8200 SFF Desktop Quad Core i7 4GB 1TB AMD Radeon HD 6350 
HP Compaq Elite 8200 SFF Desktop PC In i7 3.4GHz 4GB 500GB Win 7 Pro 
HP Compaq Elite 8200 SFF Desktop In Quad Core i7 3.4GHz 4GB 500GB DVDRW 
HP Compaq Elite 8200 PC Desktop In Quad Core i7 3.4GHz 4GB RAM 1TB DVDRW 
HP Compaq Elite 8200 PC Desktop In Core i5 3.3GHz 4GB 1TB HDD XZ990UTABA 
HP Compaq Elite 8200 Mini Tower Desktop PC Quad Core i5 3.3GHz 4GB 1TB DVDRW 
HP Compaq Elite 8200 Mini Tower Desktop Core i5 3.3GHz 4GB 160GB A7K55UTABA 
HP Compaq Elite 8200 Desktop Quad Core i7 3.4GHz 4GB 1TB Win 7 Professional 
HP Compaq Elite 8200 Desktop PC In i7 2600 4GB 1TB DVD 3 Years  
HP Compaq Elite 8200 Desktop In i5 Quad Core 3.1GHz 4GB 500GB Win 7 Pro 
HP Compaq Elite 8200 Desktop In Core i7 3.4GHz 4GB 1TB Win 7 Pro 64-Bit 
HP Compaq Elite 8200 Desktop Core i5 Quad Core 3.1GHz 4GB 500GB XZ989UTABA 
HP Compaq Elite 8200 Convertible Desktop Quad Core i5 3.3GHz 4GB 160GB SSD 
HP Compaq 8200 Elite SFF Desktop PC / Core i5-2400 3.1GHz / 8GB / Windows 7 Pro
HP Compaq 8200 Elite SFF Desktop PC / Core i5-2400 3.1GHz / 16GB / Windows 7 Pro
HP Compaq 8200 Elite 8200e All-in-One 23" Full HD LED AiO Computer QV605AW
HP Compaq 6200 Pro Tower Desktop In i3 3.3GHz 4GB 160GB SSD A7K41UTABA 
HP Compaq 6200 Pro Small Form Factor Desktop i3 3.3GHz 4GB RAM 160GB SSD 
HP Compaq 6200 Pro PC Microtower Desktop In Quad Core i7 3.4GHz 4GB 500GB 
HP Compaq 6200 Pro Microtower PC Desktop In Dual Core i3 3.3GHz 2GB 250GB 
HP Compaq 6200 Pro Microtower PC Desktop Core i3 3.3GHz 4GB DDR3 160GB SSD 
HP Compaq 6200 Pro Microtower Desktop Quad Core i7 3.4GHz 4GB 500GB DVDRW 
HP Compaq 6200 Pro Desktop PC In Quad Core i7 4GB 500GB HD6250 512MB 
HP Compaq 6200 Pro Desktop In Dual Core i3 3.3GHz 2GB 250GB Windows 7 
HP Compaq 6200 Pro Desktop In Core i3 3.3GHz 2GB 250GB Win 7 Pro 32-bit 
HP Compaq 6200 Pro A2W59UTABA Business Desktop i3-2120 3.3GHz 2GB 250GB Win7
HP Compaq 6200 Pro A2W59UTABA Business Desktop i3-2120 3.3GHz 2GB 250GB Win7
HP Compaq 6200 Pro A2W59UTABA Business Desktop i3-2120 3.3GHz 2GB 250GB Win7
HP Compaq 6200 Pro A2W59UTABA Business Desktop i3-2120 3.3GHz 2GB 250GB Win7
HP Compaq 6200 Pro A2W58UTABA Business Desktop i3-2120 3.3GHz 2GB 250GB
HP Compaq 6200 Pro A2W58UTABA Business Desktop i3-2120 3.3GHz 2GB 250GB
HP Compaq 6200 Pro A2W58UTABA Business Desktop i3-2120 3.3GHz 2GB 250GB
HP Compaq 6200 Pro A2W58UTABA Business Desktop i3-2120 3.3GHz 2GB 250GB
HP Compaq 6200 Pro A2W45UT Business Desktop i5-2400 3.1GHz 4GB 500GB Windows 7
HP Compaq 6200 Pro A2W45UT Business Desktop i5-2400 3.1GHz 4GB 500GB Windows 7
HP Compaq 6200 Pro A2W45UT Business Desktop i5-2400 3.1GHz 4GB 500GB Windows 7
HP Compaq 6200 Pro A2W45UT Business Desktop i5-2400 3.1GHz 4GB 500GB Windows 7
HP Compaq 6200 Pro A2W44UTABA Business Desktop i5-2400 3.10GHz 4GB 500GB
HP Compaq 6200 Pro A2W44UTABA Business Desktop i5-2400 3.10GHz 4GB 500GB
HP Compaq 6200 Pro A2W44UTABA Business Desktop i5-2400 3.10GHz 4GB 500GB
HP Compaq 6200 Pro A2W44UTABA Business Desktop i5-2400 3.10GHz 4GB 500GB
HP Compaq 6200 Pro A2W42UTABA Desktop i7-2600 3.40GHz 4GB 500GB Windows 7
HP Compaq 6200 Pro A2W42UTABA Desktop i7-2600 3.40GHz 4GB 500GB Windows 7
HP Compaq 6200 Pro A2W42UTABA Desktop i7-2600 3.40GHz 4GB 500GB Windows 7
HP Compaq 6200 Pro A2W42UTABA Desktop i7-2600 3.40GHz 4GB 500GB Windows 7
HP Compaq 6200 PC Desktop Core i5 2400 3.1GHz 4GB RAM 500GB DVDRW Win 7 Pro 
HP Compaq 6200 Desktop PC Quad Core i7 3.4GHz 4GB 500GB DVD Windows 7 Pro 
HP Compaq 6200 Desktop In Quad Core i5 2400 3.1GHz 4GB 500GB A2W45UTABA 
HP Compaq 6005 Pro SFF Desktop AMD Athlon II 3.2GHz 4GB 500GB A7L17UTABA 
HP Compaq 6005 Pro Desktop PC AMD Phenom II Quad Core 3.2GHz 500GB Windows 7 
HP Compaq 6005 Pro Desktop AMD Phenom II Triple Core 3GHz 4GB 500GB Win 7 
HP Compaq 6000 Pro SFF Desktop PC/Dual Core 2.8GHz/8GB/500G/Windows 7 Pro
HP Compaq 6000 Pro SFF Desktop PC / Core 2 Duo E7200 2.53GHz / 8GB / Windows 7
HP Compaq 6000 Pro SFF Desktop PC / Core 2 Duo E7200 2.53GHz / 4GB / Windows XP
HP CISCO CATALYST 1/10GBE 3120X BLADE SWITCH 451439B21
HP C7000 Blade Enclosure-BL68?5c G5-128 Cores-448GB RAM-Quad Core Opteron 2.7GHz
HP Business Desktop 6200 Pro XZ997UT Desktop Computer Core i7-2600 3.4GHz Micro 
HP Business Desktop 6200 Pro XZ806UT Desktop Computer Core i7-2600 XZ806UTABA
HP Business Desktop 6200 Pro XZ806UT Desktop Computer Core i7 i7-2600 3.4GHz 
HP Business Desktop 6200 Pro QV826US Desktop Computer Pentium G840 2.8GHz Smal
HP Business Desktop 6200 Pro LA061UT Desktop Computer Micro Tower LA061UTABA
HP Business Desktop 6200 Pro LA061UT Desktop Computer Core i3 i3-2120 3.3GHz 
HP Business Desktop 6200 Pro LA060UT Desktop Computer Core i5-2400 LA060UTABC
HP Business Desktop 6200 Pro LA059UT Desktop Computer Core i3 i3-2120 3.3GHz
HP Business Desktop 6200 Pro A7L16UT Desktop Computer Pentium G630 2.7GHz Micr
HP Business Desktop 6200 Pro A7L11UT Desktop Computer Core i5 i5-2500 3.30GHz 
HP Business Desktop 6200 Pro A7L11UT Desktop Computer Core i5 i5-2500 3.30GHz
HP Business Desktop 6200 Pro A2W61UT Desktop Computer Core i3 i3-2120 3.3GHz
HP Business Desktop 6200 Pro A2W45UT Desktop Computer Core i5 i5-2400 3.1GHz M
HP Business Desktop 6200 Pro A2W44UT Desktop Computer Core i5 i5-2400 3.1GHz S
HP Business Desktop 6200 Pro A2W41UT Desktop Computer Core i5 i5-2500 3.3GHz M
HP Business Desktop 4000 Pro XZ775UT Desktop Computer Core 2 Duo E8400 3GHz Sm