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-V Ethernet LAN 10/100/1000 I/O Ports : 10 External USB - 6 x 3.1 Gen 1 (2 Type-A front/4 Type-A rear), 4 x 2.0 (2 Type-A front/2 Type A rear - 1 front); 2 Internal USB 2.0; 1 RJ-45; 1 Serial; 2 Display Port 1.2; 1 HDMI 1.4; Input Devices : Standard Keyboard, Mouse Power : 180 W Dimensions : 29.0 x 9.26 x 29.2 cm Weight : 5.26 kg

Operating System : Windows 7 Home & Pro. MAR, Windows 10 Home & Pro MAR, Ubuntu Linux, Free DOS Chipset : Intel Q270 Processors : Intel Core i3, i5, i7 6th & 7th Gen Memory Support : Four (4) DIMM slots , Up to 64 GB DDR4 - 2400 Hard Drive : M.2, Sata III or SSD Removable Media : Optional Expansion Bays : Internal: One (1) 2.5-inch. Two (2) 3.5-inch - External: One (1) 5.24-inch Slim Line Expansion Slots : One (1) M.2 PCIe x1-2230(x1 mode), One (1) M.2 PCIe x4-2280, Two (2) PCIe 3.0 x1 (LP), One (1) PCIe 3.0 x16 (LP - x4 mode), One (1) PCIe 3.0 x16 (LP) Graphics : Intel HD Graphics 530 Audio : High Definition Audio Communications : Intel  I219LM Gigabit Ethernet Port I/O Ports : Front: Two (2) USB 2.0, Two (2) USB 3.1 (including 1 fast charging), One (1) USB Type-C, Audio I/O  Rear: Four (4) USB 3.0, Two (2) USB 2.0, Two (2) DP, RJ-45, Audio I/O Power : 180 W Dimensions : 38.8 x 10 x 30 cm Weight : 5.31 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 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 7 Home & Pro. MAR, Windows 10 Home & Pro MAR, Ubuntu Linux, Free DOS Chipset : Intel Q170 Chipset Processors : Intel Pentium and Intel Core™ i3, Intel Core i5, and Intel Core i7 6th Gen Memory Support : Four (4) DIMM slots , Up to 64 GB DDR4 2133 UDIMM 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, DVD-ROM SATA or Multi DVD-RW Expansion Bays : External: One (1) 9.5mm high, Internal: One (1) 3.5-inch, One (1) 2.5-inch 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 x4 Graphics : Intel HD Graphics 510/530 Audio : High Definition (HD) Audio, Realtek ALC662 Communications : Gigabit ethernet, Intel Ethernet Connection I219-LM I/O Ports : Front: Two (2) USB 3.0, Audio I/O Rear: Six (6) USB 3.0, Audio I/O, Serial, VGA, Two (2) DP Input Devices : Preferred Pro USB Keyboard (USB connector), Lenovo logo Enhanced Optical USB Mouse, black, Lenovo logo Power : 210 watts, autosensing, 85% PSU Dimensions : 338mm X 357mm X 88mm Weight : 12.3 lb (5.6 kg)

Operating System: Windows 10 Home & Pro MAR, Ubuntu Linux, Free DOS Chipset: Intel B250 Processors: Intel Core i5 6th generation Memory Support: 64GB max, UDIMM, DDR4-2400, four 288-pin DIMM sockets, non-ECC, Hard Drive : SATA 6.0Gb/s, 2.5" or 3.5", Solid State Drive (SSD) / SATA 6.0Gb/s, 2.5",5400 rpm or 7200 rpm Monitor cable : Optional DP to VGA, DP to DVI-D (single link), DP to dual DP, or DP to HDMI 1.4 Graphics : Intel HD Graphics 510/530/610/630 Audio : High Definition (HD) Audio, Realtek ALC662 / optional internal speaker (1.5 watt ) Communications : Bluetooth 4.1 wireless, Gigabit ethernet, Realtek RTL8111GN, Wake on LAN I/O Front Ports: Four USB 3.1 Gen1, optional two USB 3.1 Type-C Gen 2, microphone (3.5mm), headphone 3.5mm I/O Rear Ports: 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 Power : 180 watts,210 watts, autosensing, 85% PSU Dimensions : 34.3cm x 29cm x 9.25cm, 6kgr

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: Up to 32GB2 DDR4 at 2400Mhz - 2 SODIMM Hard Drive : Up to 2 TB SATA, 7200rpm or SSD, M.2 SSD Removable Media : No Optical Drive Expansion Bays : 1 (total) / 1 (free) x internal 2.5" / 3.5" shared Expansion Slots : 1 M.2 (22x30mm), 1 M.2 (22x80mm) Graphics : Integrated Intel HD Graphics Audio : Integrated Audio Communications : Integrated Intel i219-LM GbE Network Connection I/O Ports : 6 External USB 3.1 Gen 1 (1 USB Type-C? for data only and 1 Type-A front/4 Type-A rear ? 1 front with PowerShare); 1 RJ-45; 1 HDMI 1.4; 1 Display Port 1.2; 1 UAJ (front); 1 Line-out (front) Input Devices : Standard Keyboard, Mouse (USB) Power : 65 W Dimensions : 18.2 x 17.8 x 3.6 cm Weight : 1.18 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