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 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 C602 Processors :Intel Xeon E5-2600 Series, Intel Xeon E5-2600 v2 Series Memory Support :16 slots (8 slots per CPU), 3-channel DDR3, RDIMM or UDIMM, ECC, LR DIMMs,1066/1333/1600 MT/s Hard Drive :250GB to 3TB SATA 3.0-Gb/s, 300GB to 1.2TB SAS, 128GB to 1TB 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: Four (4) 3.5-inch Expansion Slots :3 PCIe x16 Gen3 Slots (3rd on 2nd CPU), PCIe x16 (x8)(on 2nd CPU), 1 PCIe x8(x4), 1 PCIe x8(x4), 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, 1 Serial, Audio I/O Input Devices :Standard Keyboard (USB or PS/2) Mouse (USB or PS/2) Power :Choice of 850W Dimensions :44.4 x 20.3 x 52.5 cm Weight :21 kg

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