Operating System :Windows 7 Home & Pro. MAR, Windows 10 Home & Pro MAR, Ubuntu Linux, Free DOS Chipset :Intel® PCH C206 Processors :Intel® Xeon? processor E3 family, 2nd gen Intel® Core™ processor family, Dual-Core Intel Pentium processors Memory Support :Four (4) DIMM slots for DDR3 PC3-10600 ECC, 16GB Max Hard Drive :250GB to 2TB SATA 3.0-Gb/s, 160GB to 256GB SSD Drives Removable Media :16X DVD-ROM SATA Drive, 16X DVD+/-RW SuperMulti SATA Drive, Blu-ray Writer Expansion Bays :External: Three (3) 5.25-inch, Internal: Three (3) 3.5-inch Expansion Slots :1 PCIe x16 Gen2 Slot, 1 PCIe x16 Gen2 (x4), 1 PCIe x8 Gen2 (x4), 2 PCIe x1 Gen1, 2 PCI Slots Graphics :Intel Integrated Graphics Media Accelerator HD Audio :Integrated Intel/Realtek HD ALC262 Audio Communications :Intel Gigabit CT Desktop NIC I/O Ports :Front: Three (3) USB 2.0, Headphone/Mic, Rear: Six (6) USB 2.0, 2 PS2, Serial, Audio I/O, DVI-I, DP Input Devices :Standard Keyboard (USB or PS/2) Mouse (USB or PS/2) Power :400 watts wide-ranging, active Power Factor Correction, 90% Efficient Dimensions :447 x 178 x 455 mm (17.6 x 7 x 17.9 in) Weight :11.7 kg (25.8 lbs)

Operating System : Windows 7 Home & Pro. MAR, Windows 10 Home & Pro MAR, Ubuntu Linux, Free DOS Chipset : Intel C236 Processors : Intel Xeon E3, V5-V6 Memory Support : Four (4) DIMM slots , Up to 64 GB (DDR4) ECC Hard Drive : HDD or SSD Removable Media : Optional Expansion Bays : External: Two (2) 5.25-inch, Two (2) 3.5-inch, Internal: Two (2) 3.5-inch, One (1) 2.5-inch Expansion Slots : PCI-Express 3.0 x1 , PCI-Express 3.0 x4 , PCI-Express 3.0 x16 Graphics : Intel® HD Graphics P530 Audio : Realtek ALC671 Communications : Gigabit Ethernet I/O Ports : USB 2.0 total 6, USB 3.1 Gen1 (USB 3.0) total 7, 2 x DisplayPort, 1 x DVI, PS/2, Input Devices : KBPC PX ECO, Mouse M440 ECO Power : 280W or 400W Dimensions : 180 x 304 x 375 mm Weight : approx. 12 kg

Operating System :Windows 10 Home & Pro MAR, Ubuntu Linux, Free DOS Chipset :Intel X58 Express Processors :Intel Xeon Processors: E5-1600 family (4C), E5-1600v2 family (4C/6C/8C), E5-2600v2 (8C) Memory Support :8 DIMM Slots for DDR3 ECC Memory Hard Drive :250GB to 2TB SATA 3.0-Gb/s, 300GB to 600GB SAS, 128GB to 256GB SSD Drives Removable Media :16X DVD-ROM SATA Drive, 16X DVD+/-RW SuperMulti SATA Drive, Blu-ray Writer Expansion Bays :External: Three (3) 5.25-inch, Internal: Three (3) 3.5-inch Expansion Slots :2 PCIe x16 Gen3 Slots, 1 PCIe x8 Gen3, 1 PCIe x8(x4) Gen2, 1 PCIe x4(x1) Gen2, 1 PCI Slot Graphics :N/A Audio :Integrated Intel/Realtek HD ALC262 Audio Communications :Integrated Intel 82579LM PCIe GbE Controller I/O Ports :Front: 1 USB 2.0, 2 USB 3.0, Headphone/Mic, Rear: 4 USB 2.0, 2 USB 3.0, 2 PS2, Audio I/O Power :600W Dimensions :44.76 x 17.78 x 44.52 cm Weight :13.2kg

Operating System : Windows 10 Home & Pro MAR, Ubuntu Linux, Free DOS Chipset :Intel C612 Processors :Intel Xeon Processors: E5-1600 v3/v4 family (4C/6C/8C), E5-2600 v3 family (8C) Memory Support :8 DIMM Slots for DDR4 ECC Registered Memory Hard Drive :500GB to 4TB SATA 3.0-Gb/s, 128GB to 1TB SSD Drives Removable Media :16X DVD-ROM SATA Drive, 16X DVD+/-RW SuperMulti SATA Drive, Blu-ray Writer Expansion Bays :External: Two (2) 5.25-inch, Internal: Two (2) 3.5-inch Expansion Slots :2 PCIe x16 Gen3 Slots, 1 PCIe x8 Gen 3, 1 PCIe x1 Gen 2, 1 PCIe x4 Gen 2, 1 PCI Slot Graphics :N/A Audio :Integrated Intel/Realtek HD ALC262 Audio Communications :Integrated Intel I218LM PCIe GbE Controlle I/O Ports :Front: Four (4) USB 3.0, Headphone/Mic, Rear: Two (2) USB 2.0, Four (4) USB 3.0, 2 PS2, Audio I/O Power :525W or 700W Dimensions :43.2 x 16.8 x 45.6 cm Weight :13.5 kg

Operating System : Windows 10 Home & Pro MAR, Ubuntu Linux, Free DOS Chipset : Intel C226 chipset Processors : Intel Xeon processor E3 v3 family, 4th gen Intel Core processors 4th Gen, Dual-Core Intel Pentium processors Memory Support : 4 DIMM slots, supporting up to 32GB ECC/non-ECC, DDR3 1600 MT/s Hard Drive : 500GB to 4TB SATA 3.0-Gb/s, 128GB to 1TB SSD Drives Removable Media : HP Slim DVD-ROM Drive, HP Slim SuperMulti DVDRW SATA Drive, HP Slim Blu-ray Writer Expansion Bays : External: Two (2) 5.25-inch, One (1) Slim, Internal: Two (2) 3.5-inch, Two (2) 2.5-inch Expansion Slots : 1 PCIe Gen3 x16 slot, 1 PCIe Gen2 x4 slot (x16), 1 PCIe Gen2 x4 slot, 1 PCIe Gen 2 x1 slot, 1 PCI slot Graphics : Intel Integrated Graphics Media Accelerator HD Audio : Integrated Realtek HD ALC221 Audio Communications : Integrated Intel I217LM PCIe GbE Controller I/O Ports : Front: 2 USB 2.0, 2 USB 3.0, Headphone/Mic, Rear: 4 USB 2.0, 2 USB 3.0, 2 PS2, Audio I/O, DVI-I, 2 DP Input Devices : Standard Keyboard (USB or PS/2), Mouse (USB or PS/2) Power : 400 w Dimensions : 399 x 170 x 442 mm Weight : 9.5 kg

Operating System :Windows 7 Home & Pro. MAR, Windows 10 Home & Pro MAR, Ubuntu Linux, Free DOS Chipset :Intel® 5400 Processors :Quad-Core Intel® Xeon? Processor 5400 or Dual-Core Intel® Xeon? Processor 5200 Memory Support :Eight (8) DIMM slots DDR2-667MHz FB-DIMM. Up to 32 GB Memory capacity Hard Drive :80GB to 1TB SATA 3.0-Gb/s, 73GB to 450GB SAS Drives Removable Media :16X DVD-ROM Drive, SATA 48X CD-RW/DVD-ROM Combo Drive, SuperMulti DVD+/-RW LightScribe Drive Expansion Bays :External: Two (2) 5.25-inch, One (1) 3.5-inch, Internal: Two (2) 3.5-inch Expansion Slots :2 PCI Express x16 Gen2 Graphics Bus, 2 PCI, 2 PCI Express x8 (x4) Graphics :N/A Audio :High Definition Integrated Realtek ALC262 Audio Communications :Integrated Broadcom 5755 Gigabit LAN I/O Ports :Front: Two (2) USB 2.0, Headphone/Mic, Rear: Five (5) USB 2.0, 2 PS2, Serial, Audio I/O Input Devices :Standard Keyboard (USB or PS/2) Mouse (USB or PS/2) Power :650 watt 80 PLUS high efficiency power supply Dimensions :N/A Weight :N/A