Operating System :Windows 10 Home & Pro MAR, Ubuntu Linux, Free DOS Chipset :Intel X58 Express Processors :Dual/Quad/Six Core Intel Xeon 3500/3600 Series Processors Memory Support :4-DIMM slots/ 6-DIMM slots (depending on base unit model) for PC3-10600 DDR3-1333 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: Two (2) 3.5-inch Expansion Slots :2 PCIe x16 Gen2 Slots, 1 PCIe x4 Gen2, 1 PCIe x4 Gen1, 2 PCI Slots Graphics :N/A Audio :Integrated Intel/Realtek HD ALC262 Audio Communications :Integrated Broadcom 5764 PCIe LOM Controller I/O Ports :Front: Two (2) USB 2.0, Headphone/Mic, Rear: Six (6) USB 2.0, 2 PS2, Serial, Audio I/O Input Devices :Standard Keyboard (USB or PS/2), Mouse (USB or PS/2) Power :475W, 85% efficient Power Supply Dimensions :45.53 x 45 x 16.79 cm Weight :15.1 kg

Operating System : Windows 10 Home & Pro MAR, Ubuntu Linux, Free DOS Chipset : Intel Q150 Processors : Intel 6th Gen Core i3,i5,i7, Intel Pentium, Intel Celeron Memory Support : Four (4)DIMM slots , Up to 64 GB DDR4 Hard Drive : SATA, 7200 rpm Removable Media : Optional Expansion Bays : External: One (1) 9.5 mm, Internal: Οne (1) 2.5-inch, Οne (1) 3.5-inch Expansion Slots : One (1) LP PCIe 3.0 x 16, One (1) LP PCIe 3.0, One (1)LP PCI x 16 Graphics : Intel HD Graphics Audio : High Definition (HD) Audio, Realtek ALC662 Communications : Intel I219-LM GbE Network Connection I/O Ports : Front: Two (2) USB 3.0, Audio I/O, Rear: Four (4) USB 3.0, Two (2) USB 2.0, Two (2) DP, VGA, Serial, RJ-45, Audio I/O Power : 210 W Dimensions : 35.7 x 33.8 x 8.8 cm Weight : 5.6 kg

Operating System: Windows 10 Home & Pro MAR, Ubuntu Linux, Free DOS Chipset: Intel H110 Processors: Intel Core i3, i5, i7 6th & 7th Gen Memory Support: Two (2) SO DIMM slots DDR4 Hard Drive: Sata HDD SSD M2 Removable Media: optional Expansion Bays: External: One (1) 5.25-inch, Internal: One (1) 2.5-inch Expansion Slots: N/A Graphics: Intel HD Graphics Audio: Realtek ALC671 Communications: 10/100/1,000 MBit/s Realtek RTL8111GN I/O Ports: Audio: line-out, microphone, headphone, DisplayPort, DVI-D, Front: Two (2) USB 3.0, Rear: Two (2) USB 2.0,Two (2) USB 3.0 Power: 65W Dimensions: 185 x 190 x 54 mm Weight: 1.6 kg

Operating System: Windows 10 Home & Pro MAR, Ubuntu Linux, Free DOS Chipset: Intel B150 Chipset Processors: Intel Pentium G, i3 i5 i7 6th Memory Support: Up to 32GB DDR4 2133, 2 soddim Hard Drive : SSD Removable Media : N/A Expansion Bays : N/A Expansion Slots : N/A Graphics : Intel HD Graphics 510/530 Audio : N/A Communications : 1 Gigabit Ethernet I/O Ports : 6 x USB 3.0, one microphone, one headphone / microphone combo jack, ethernet (RJ-45), two DisplayPort, Power : 65 W or 90 W Dimensions : 35 mm x 179 mm x 182 mm Weight : 1.6 kg

Operating System: Windows 10 Home & Pro MAR, Ubuntu Linux, Free DOS Chipset: Intel B250 Processors: Intel Core i3, i5, i7 7th generation Memory Support: Up to 64GB DDR4, Two DDR4 DIMM slots, 2400 MHz Hard Drive : HDD or SSD Graphics : Intel HD Graphics 530, 630 Audio : Realtek ALC662 Communications : 10/100/1000 Mbit/s Ports: 6 x USB 3.1, 2 x USB 2.0, microphone, headphone, serial, RJ-45, VGA, DisplayPort, HDMI Power : 180 W Dimensions : 145 x 293.2 x 366 mm Weight : 5.65 kg

Operating System :Windows 10 Home & Pro MAR, Ubuntu Linux, Free DOS Chipset :Intel C602 Processors :Intel® Xeon processor E5-1600 v2 with up to six cores Memory Support :Quad channel; Up to 128GB 1866MHz ECC or 1600MHz non-ECC DDR3 memory; 8 DIMM slots Hard Drive :SATA 7200RPM Up to 3.0TB, SATA 10K RPM Up to 500GB, SSD Up to 512GB Removable Media :Slimline options: DVD-ROM; DVD+/-RW; BD-RE; Optional 5.25" device: DVD+/-RW, 19-in-1 media card reader Expansion Bays :One external slimline optical bay; Two internal 3.5" hard drive bays; one external 5.25" bay; Expansion Slots :Two PCIe x16 Gen 3; one PCIe x16 Gen 3 wired x8 (HL); one PCIe x4 Gen 2; one PCIe x1 Gen 2; One PCI 32bit/33MHz Graphics :Support for two PCI Express? x16 Gen 2 or Gen 3 graphics cards up to 300W Audio :Integrated Realtek ALC269Q High Definition Audio Communications :Intel 82579 Gigabit Ethernet controller I/O Ports :Front three USB 2.0, One USB 3.0, Mic/Headphone; Rear: Three USB 2.0, Three USB 3.0, One Serial, Two PS2 Input Devices :USB: Dell QuietKey, Enhanced Multimedia, Smartcard Reader keyboard; Bluetooth Keyboard and Mouse USB: Dell two-button mechanical with scroll, Dell two-button optical with scroll Power :685W or 425W Dimensions :(HxWxD): 16.30 x 6.79 x 18.54"; 414 x 172.6 x 471mm Weight :N/A

Operating System : Windows 10 Home & Pro MAR, Ubuntu Linux, Free DOS Chipset : Intel Q150 Processors : Intel 6th generation Core i7, i5, i3, Pentium G Memory Support : Four (4) DIMM slots , Up to 64 GB DDR4 2133 MHz SDRAM  Hard Drive : SATA III HDD or SSD, M.2 SSD Removable Media : (optional) DVD-ROM, DVD Super Multi, BD Triple Writer SATA slim (tray) Expansion Bays : External: One (1) 5.25-inch, One (1) 3.5-inch, Internal: One (1) 3.5-inch Expansion Slots : One (1) LP PCI-e 3.0 x16, One (1) LP PCI-e 2.0 x4, Two (2) LP PCI-e 2.0 x1 Graphics : Intel HD Graphics Audio : Realtek ALC671 Communications : 10/100/1,000 MBit/s Intel I219V I/O Ports : Front: Two (2) USB 2.0, Two (2) USB 3.0 microphone, headphone  Rear: Two (2) USB 2.0, Four (4) USB 3.0, Two (2) DisplayPort, DVI-D, Audio I/O Power : 280 watts 84% active PFC Dimensions : 332 x 338 x 89 mm Weight : 8 kg

Operating System: Windows 10 Home & Pro MAR, Ubuntu Linux, Free DOS Chipset: Intel Q87 Processors: Intel Core i3,i5,i7 4th Gen, Intel Pentium, Intel Celeron Memory Support: Two (2) SODIMM slots , Up to 16 GB DDR3 ,up to 1600 MHz Hard Drive: SATA , 7200 rpm Removable Media: N/A Expansion Bays: Internal: One (1) 2.5-inch, One (1) M.2 PCIe x4 Expansion Slots: One (1) M.2 PCIe x4-2230 (for WLAN), One (1) M.2 PCIe x4 2280 (for storage) Graphics: Intel HD Graphics Audio: HD audio with Realtek ALC221 codec (all ports are stereo) Communications: Gigabit Ethernet I/O Ports: Front: Two (2) USB 3.0(one Fast Charging Port), Audio I/O Rear: Four (4) USB 3.0, VGA, DP, RJ-45, Audio Out Input Devices: Standard Keyboard, Mouse (USB) Power: 65W Dimensions: 17.7 x 17.5 x 3.4 cm Weight: 1.3 kg