Operating System : Windows 10 Home & Pro MAR, Ubuntu Linux, Free DOS Chipset : Intel Q43 Processors : Intel Core 2 Duo, Dual Core, Core 2 Quad, Pentium & Celeron Memory Support : Four (4) DIMM slots , Up to 16 GB DDR2 SDRAM  Hard Drive : SATA, SSD SATA Removable Media : N/A 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 2.0 x16, One (1) LP PCI-e 2.0 x4, Two (2) LP PCI Graphics : Intel GMA 4500 Audio : Realtek ALC663 Communications : Gigabit Ethernet I/O Ports : Front: Two (2) USB, microphone, headphone  Rear: Six (6) USB, Stereo Line In/Out, VGA Power : 270W active PSU Dimensions : 38 x 34 x 10 cm Weight : 10 kg

Operating System : Windows 10 Home & Pro MAR, Ubuntu Linux, Free DOS Chipset : Intel iQ33 Processors : Intel Core 2 Duo, Dual Core, Pentium & Celeron Memory Support : Four (4) DIMM slots , Up to 8 GB DDR2 SDRAM  Hard Drive : Up to 250 GB 7200 rpm Removable Media : DVD-ROM/ DVD-ReWritable 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 2.0 x16, One (1) LP PCI-e 2.0 x1, Two (2) LP PCI Graphics : Intel GMA 3100 Audio : Realtek ALC 262 Communications : Broadcom BCM5754 I/O Ports : Front: Two (2) USB 2.0, Audio I/O  Rear: Six (6) USB 2.0, Audio I/O, VGA, Two (2) PS/2 Input Devices : Standard Keyboard (PS/2 or USB) Power : 270 W Dimensions : 38 cm x 34 cm x 10 cm Weight : 10 kg

Operating System : Windows 10 Home & Pro MAR, Ubuntu Linux, Free DOS Chipset : Intel Q87 Processors : Intel 4th Gen Core i3,i5,i7, Intel Celeron, Intel Pentium Memory Support : Four (4) DIMM slots , Up to 32 GB DDR3 SDRAM  Hard Drive : Up to 2TB 7200rpm or SSD Removable Media : DVD-ROM/ DVD-ReWritable Slim Expansion Bays : External: One (1) 5.25-inch slim, One (1) 3.5-inch Internal: One (1) 3.5-inch, One (1) 2.5-inch Expansion Slots : Two (2) PCI Express x16, Two (2) PCI Express x1 Graphics : Intel HD Graphics Audio : Realtek ALC221 codec Communications : Intel I217LM Gigabit Network Connection I/O Ports : Front: Two (2) USB 3.0, Two (2) USB 2.0, Audio I/0, Rear: Two (2) USB 3.0, Four (4) USB 2.0, VGA, DP, RJ-45, Serial, PS/2, Audio I/O Power : 240 W Dimensions : 37.9 cm x 33.8 cm x 10 cm Weight : 7.6 kg

Operating System : Windows 10 Home & Pro MAR, Ubuntu Linux, Free DOS Chipset : Intel B250 Chipset Processors : Intel Celeron, Intel Pentium, or 6/7th Generation Intel Core i3 / i5 / i7 Processor Memory Support : Four (4) UDIMM slots , Up to 64 GB DDR4-2400 Hard Drive : HDD or SSD Removable Media : Optional Expansion Bays : N/A Expansion Slots : N/A Graphics : Intel HD Graphics 530 Audio : Realtek ALC662 codec Communications : Gigabit Ethernet I/O Ports : Front Ports : Four USB 3.1 Gen1, optional two USB 3.1 Type-C Gen 2 (only available via special bid), microphone (3.5mm), headphone (3.5mm), Rear : Two USB 3.1 Gen1, two USB 2.0, optional two USB 2.0, serial (9-pin), optional 2nd serial (9-pin), optional parallel (25-pin), ethernet (RJ-45), one VGA, two DisplayPort, two PS/2 ports (keyboard/mouse) Power : 210 W or 180W Dimensions : 92.5mm X 290.5mm X 343.5mm Weight : 6kgrm x 9.25cm, 6kgr

Operating System : Windows 10 Home & Pro MAR Chipset : Intel Q57 Processors : Intel Core i3, i5, i7 4th Gen Memory Support : Four (4) DIMM slots , Up to 32 GB DDR3 PC3-12800 1600 MHz Hard Drive : SATA3 Hard Drive 7200 rpm or SSD Removable Media : Optional Slim Line Expansion Bays : External: One (1) 3.5-inch (for Media Card Reader), One (1) Slim Optical Drive Bay Internal: One (1) 2.5-inch, One (1) 3.5-inch (available without Media Card Reader) Expansion Slots : One (1) PCIe 3.0 x16 - low-profile, Two (2) PCIe 2.0 x1 - low-profile, One(1) PCIe 2.0 x16 - low-profile Graphics : Intel HD Graphics Audio : HD Audio (integrated) Communications : Gigabit Ethernet I/O Ports : Front: Two (2) USB 2.0, Two (2) USB 3.0 Rear: Four (4) USB 2.0, Two (2) USB 3.0, VGA, DisplayPort, RJ-45, Serial, PS/2 Keyboard/Mouse, Audio I/O Input Devices : Standard Keyboard, Mouse (USB ) Power : 240W active PFC Dimensions : 338 x 100 x 379 mm Weight : 7.6 kg

Operating System : Windows 10 Home & Pro MAR Chipset : Intel Q270 Processors : Intel 6th & 7th Gen Core i3, i5, i7 Memory Support : Four (4) DIMM slots , Up to 64 GB DDR4-2400 SDRAM Hard Drive : HDD or SSD Removable Media : Optional Expansion Bays : Internal: One (1) 2.5-inch, One (1) 3.5-inch, External: One (1) slim ODD, One (1) SD Card Reader Expansion Slots : One (1) Turbo Drive M.2 PCIe x1-2230, One (1) Turbo Drive M.2 PCIe x4-2280, Two (2) PCI Express x16 (v3.0); 1 wired as an x4 Graphics : Intel HD Graphics Audio : Conexant CX20632 codec Communications : Realtek RTL8201N FtE I/O Ports : Front: Two (2) USB 2.0, Two (2) USB 3.1, One (1) USB Type C 3.1Audio I/O,  Rear: Four (4) USB 3.1, Two (2) USB 2.0 Audio I/O, Two (2) DP, RJ-45 Power : 80 PLUS Bronze 180W active PFC or 80 PLUS Platinum 180W active PFC Dimensions : 269.24 x 93.98 x 297.18 mm Weight : 4.53 kg

Operating System : Windows 10 Home & Pro MAR, Ubuntu Linux, Free DOS Chipset : Intel Q170 PCH-H Vpro Processors : Intel Core i5 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 Power : 200W Dimensions : 37.9 x 33.8 x 10 cm Weight : 7.6 kg

Operating System : Windows 7 Home & Pro. MAR, Windows 10 Home & Pro MAR, Ubuntu Linux, Free DOS Chipset : Intel Q270 Chipset Processors : Intel Pentium and Intel Core i3, Intel Core i5, and Intel Core i7 6th & 7th Gen Memory Support : UDIMM, DDR4-2400, 4 x 288-pin DIMM sockets Hard Drive : SATA 6.0Gb/s, 2.5"/ 3.5" wide, 5400 / 7200 rpm, Solid State Hybrid Drive (SSHD), Solid State Drive (SSD), M2 Removable Media : Optional 9-in-1 media reader, Sim DVD Burner Expansion Bays : Bay 1 Slim external optical drive bay, Bay 2 3.5", internal bay for HDD/SSD, Bay 3 2.5", optional internal bay for HDD/SSD Expansion Slots : One (1) PCI-e (LP) 3.0 x16, One (1) PCI-e (LP) 3.0 x1, One (1) PCI-e (LP) 3.0 x16 (x4 signal) Graphics : Up to Integrated Intel HD Graphics Audio : High Definition (HD) Audio, Realtek ALC662 Communications : Gigabit ethernet connection I/O Ports : Front: Four (4) USB 3.0, Audio I/O Rear: Four (4) USB 3.0, Audio I/O, Serial, VGA, Two (2) DP, LAN, Two (2) PS2 Power : 180W, autosensing, 85% PSU Dimensions : 290.5 mm x 92.5 mm x 343.5 mm Weight : 5.4kg