Operating System: Windows 10 Home & Pro MAR, Ubuntu Linux, Free DOS Chipset: Intel Q170 Processors: Intel 6th & 7th generation Core i5-i7 Quad Core, Core i3 Dual Core Memory Support: Four (4) DIMM slots , DDR3 Up to 16 GB 1600 MHz Hard Drive : Up to 2 TB or SSD (optional) SATA, M.2 SSD (Optional) Removable Media : DVD-ROM/ DVD-ReWritable slim (optional), Card reader (optional) Expansion Bays : 1 (total) / 0 (free) x external 5.25" Slim Line, 1 (total) / 0 (free) x internal 2 x 2.5"/3.5" shared Expansion Slots : 2 x PCIe x16, 1 x PCIe x1, 1 x PCI, 1 M.2 Graphics : Integrated Intel HD Graphics (depends on CPU) Audio : Integrated Audio Communications : Integrated Intel® i219-V Ethernet LAN 10/100/1000 I/O Ports : 10 External USB: 6 x 3.0 (2 front/4 rear) and 4 x 2.0 (2 front/2 rear - 1 front with PowerShare); 1 Internal USB 2.0; 1 RJ-45; 1 Serial; 2 Display Port 1.2; 1 HDMI 1.4; 2 PS/2; 1 UAJ, 1 Line-out; Power : 240 W Dimensions : 35 x 15.4 x 27.4 cm Weight : 7.93 kg

Operating System : Windows 10 Home & Pro MAR, Ubuntu Linux, Free DOS Chipset : Intel Q270 Processors : Intel Celeron, Intel Pentium, Intel Core i3, i5, i7 6th & 7th Gen Memory Support : Four (4) DIMM slots , Up to 64 GB DDR4 Hard Drive : Sata or SSD Removable Media : Optional External Bays : One 5.25", One slim ODD, 1 SD 4 card reader Expansion Slots : 1 M.2 2230 for optional wireless NIC, 1 M.2 2280 for storage drives, 1 PCIe 3.0 x16, 2 PCIe 3.0 x1, 1 PCIe 3.0 x4 slot using x16 connector for Optane support 2 Graphics : Intel HD Graphics 530 Audio : Conexant CX20632 codec with universal audio jack and 2W internal speaker, headset and headphone front ports (3.5 mm), multi-streaming capable Communications : Intel  I219LM Gigabit Ethernet Port I/O Ports : Front: 1 headset connector, 1 USB 2.0 (fast charging), 1 USB 2.0, 2 USB 3.1 Gen 1, 1 USB Type-C? (charging), 1 SD 4 card reader (optional), Back: 1 RJ-45, 2 USB 2.0, 1 power connector, 4 USB 3.1 Gen 1, 1 audio-in; 1 audio-out, 1 DisplayPort? 1.2 Power : 180 W or 250 W Dimensions : 17 x 27.4 x 33.8 cm Weight : 7.14 kg

Operating System : Windows 10 Home & Pro MAR Chipset : Intel Q170 PCH-H Vpro Processors : Intel Core I3, i5, I7 6th Gen Memory Support : Four (4) DIMM slots , Up to 64 GB DDR4 - 2133 Hard Drive : SSD-PCIe,G2 SSD-PCIe, Sata 7.200rpm or SSD or SSHD Removable Media : HP 9.5mm Slim Desktop DVD-ROM ODD/DVDRW/BDXL Blu-Ray Drive Expansion Bays : External: One (1) 9mm Slim ODD Internal: Two (2) 3.5inch, One (1) 2.5inch Expansion Slots : Two (2) PCIe x1 v3.0, Two (2) PCIe x16 v3.0, Graphics : Intel HD Graphics Audio : HD audio with Realtek ALC221 codec Communications : Intel  I219LM Gigabit Ethernet Port I/O Ports : Front: Two (2) USB 2.0 (one includes fast charging), Two (2) USB 3.0, Audio I/O Rear: Six (6) USB 3.0, VGA, Two (2) DP, RJ-45, PS/2, Serial, Audio I/O Input Devices : Standard Keyboard, Mouse (USB or PS/2) Power : 280 W, up to 92% efficient, active PFC; 400 W, up to 92% efficient, active PFC Dimensions : 100 x 381 x 337 mm Weight : 9.4 KG

Operating System : Windows 10 Home & Pro MAR, Ubuntu Linux, Free DOS Chipset : Intel Q85 Express Processors : Intel 4th Gen Core i5 Memory Support : Four (4) DIMM slots , Up to 32 GB DDR3 SDRAM , 1600MHz Hard Drive : Up to 1TB 7200rpm Removable Media : DVD-ROM/ DVD-ReWritable (slim) Expansion Bays : External: One (1) 5.25-inch, One (1) 3.5-inch, Internal: Two (2) 3.5-inch, One (1) 2.5-inch Expansion Slots : One (1) PCI Express x16, Three (3) PCI Express x1 Graphics : Intel HD Graphics Audio : Realtek ALC221 codec Communications : Intel I217LM GbE Network Connection I/O Ports : Front: 2 USB 3.0, 2 USB 2.0, Audio I/O, Rear: 2 USB 3.0, 4 USB 2.0, VGA, DP, RJ-45, Audio I/O,PS/2 Input Devices : Standard Keyboard (USB or PS/2) Power : 320 W Dimensions : 44.2 cm x 39.9 cm x 17 cm Weight : 9.3 kg

Operating System : Windows 10 Home & Pro MAR, Ubuntu Linux, Free DOS Chipset : Intel Q67 Processors : Intel Core i3, i5, i7 2nd Gen Memory Support : Four (4) DIMM slots , Up to 16 GB DDR3 Hard Drive : Sata III , 7.200rpm or SSD Removable Media : DVD-ROM/DVD-RW Expansion Bays : External : Two (2) 5.25-inch , Internal: Two (2) 3.5-inch Expansion Slots : One (1) PCI, One (1) PCIe x16, One (1) PCIe x 16 (wired x4), PCIe x1 Graphics : Intel HD Graphics Audio : Integrated Realtek ALC269Q HD Audio Communications : Intel 82579LM Gigabit Ethernet Port I/O Ports : Front: Four (4) USB 2.0 , Audio I/O  Rear: Six (6) USB 2.0, VGA, DP, RJ-45, Serial, Audio I/O Power : 265W Dimensions : 41.7 x 36 x 17.5 cm Weight : 8.8 kg