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 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 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 Q150 Processors: Intel 6th Generation Core i3,i5,i7, Intel Pentium Memory Support: Two (2) SODIMM slots , Up to 32 GB DDR4 ,up to 2133 MHz Hard Drive: SATA , M.2 PCIe Removable Media: N/A Expansion Bays: Internal: One (1) 2.5-inch Expansion Slots: One (1) M.2 PCIe x1 , One (1) M.2 PCIe x4 Graphics: Intel HD Graphics Audio: HD audio with Realtek ALC221 codec Communications: Realtek RTL8151GH-CG GbE Network Connection I/O Ports: Front: Three (3) USB 3.0 (one Fast Charging Port,one Type-C), Audio I/O Rear: Four (4) USB 3.0, VGA, DP, RJ-45 Power: 65W or 90W Dimensions: 17.7 cm x 17.5 cm x 3.4 cm Weight: 1.3 kg

Operating System : Windows 10 Home & Pro MAR, Ubuntu Linux, Free DOS Chipset : Intel Q85 Processors : Intel 4th Gen Core i3,i5,i7, Intel Pentium, Intel Celeron Memory Support : Four (4) DIMM slots , Up to 32 GB DDR3 SDRAM, 1600MHz  Hard Drive : Up to 1TB 7200 rpm Removable Media : DVD-ROM/ DVD-ReWritable (slim) Expansion Bays : External: One (1) 3.5-inch Internal: One (1) 3.5-inch, One (1) 2.5-inch Expansion Slots : One (1) LP PCI Express x16s, Three (3) LP PCI Express x1 Graphics : Intel HD Graphics Audio : Realtek ALC221 codec Communications : Intel I217LM GbE Network Connection I/O Ports : Front: Two (2) USB 3.0, Two (2) USB 2.0, Audio I/O, Rear: Two (2) USB 3.0, Two (2) USB 2.0, VGA, 2 x DP, Audio I/O, RS-232 serial port Power : 240 W Dimensions : 38.05 cm x 33.7 cm x 10 cm Weight : 7.6 kg

Operating System: Windows 10 Home & Pro MAR, Ubuntu Linux, Free DOS Chipset: Intel Q270 Processors: Intel 6th & 7th generation Core i5-i7 Quad Core, Core i3 Dual Core Memory Support: Four (4) DIMM slots , DDR4 Up to 64 GB 2400 MHz Hard Drive : Up to 2 TB or SSD (optional) SATA or M.2 Removable Media : DVD-ROM/ DVD-ReWritable slim, Card reader (optional) Expansion Bays : External: One (1) slim, Internal: One (1) 3.5-inch Expansion Slots : One (1) PCIe x16 HH, One (1) PCIe x4 HH, One (1) M.2 2280 Graphics : Integrated Intel HD Graphics (depends on CPU) Audio : Integrated Audio Communications : Integrated Intel i219-LM E GbE Network Connection I/O Ports : 10 External USB - 6 x USB 3.1 Gen 1 (1 USB Type-C for data only and 1 Type-A front/4 Type-A rear) and 4 x USB 2.0 (2 Type-A front/2 Type-A rear - 1 front with PowerShare); 4 Internal USB 2.0; 1 RJ-45; 1 Serial; 2 Display Port 1.2; 1 HDMI 1.4; Power : 180 W Dimensions : 29.0 x 9.26 x 29.2 cm Weight : 5.26 kg

Operating System: Windows 10 Home & Pro MAR, Ubuntu Linux, Free DOS Chipset: Intel 630 Processors: Intel Pentium G Series, Intel Celeron, Intel Core i3, i5, i7 8th & 9th Gen Memory Support: Up to 64GB DDR4, Four DDR4 DIMM slots, dual-channel capable Hard Drive : SATA, SSD Graphics : Intel UHD Graphics 610/630 Audio : Realtek ALC233VB2 codec Communications : Integrated 100/1000M I/O Front Ports: 2x USB 3.1 Gen 1, 2x USB 3.1 Gen 2, 1x USB-C? 3.1 Gen 1, 1x headphone / microphone combo jack (3.5mm), 1x microphone I/O Rear Ports: 4x USB 2.0, 1x VGA, 2x DisplayPort, 1x serial (9-pin), 1x Ethernet (RJ-45) Power : 180W or 210W or 260W Dimensions : 92.5 x 290.5 x 343.5 mm Weight : Around 6.0 kg