Operating System : Windows 10 Home & Pro MAR, Ubuntu Linux, Free DOS Chipset : Intel Q170 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 Expansion Bays : One (1) 5.25-inch for slim optical disc drive only, One (1) internal 3.5-inch, One (1) external 3.5-inch Expansion Slots : One (1) LP PCI-e 3.0 x16, One (1) LP PCI-e 2.0 x 4 (mech. x16), Two (2) LP PCI-e x 1 Graphics : Intel HD Graphics Audio : Realtek ALC671 Communications : 10/100/1,000 MBit/s Intel I219LM I/O Ports : Audio I/O, microphone, headphone, 2 x DisplayPort, DVI-D, RJ-45, front 2 x USB 2.0, 2 x USB 3.0, rear 2 x USB 2.0, 4 x USB 3.0, 2 x USB 2.0 Power : 280 watts Dimensions : 332 x 338 x 89 mm Weight : 8 kg

Operating System : Windows 10 Home & Pro MAR, Ubuntu Linux, Free DOS Chipset : Intel Q170 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 Expansion Bays : One (1) 5.25-inch for slim optical disc drive only, One (1) internal 3.5-inch, One (1) external 3.5-inch Expansion Slots : One (1) LP PCI-e 3.0 x16, One (1) LP PCI-e 2.0 x 4 (mech. x16), Two (2) LP PCI-e x 1 Graphics : Intel HD Graphics Audio : Realtek ALC671 Communications : 10/100/1,000 MBit/s Intel I219LM I/O Ports : Audio I/O, microphone, headphone, 2 x DisplayPort, DVI-D, RJ-45, front 2 x USB 2.0, 2 x USB 3.0, rear 2 x USB 2.0, 4 x USB 3.0, 2 x USB 2.0 Power : 280 watts Dimensions : 332 x 338 x 89 mm Weight : 8 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, 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