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 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 Chipset : Intel Q170 PCH-H Vpro Processors : Intel Core i3, i5, i7 6th Gen Memory Support : Two (2) SODIMM slots , Up to 32 GB DDR4 - 2133 Hard Drive : M.2, Sata III or SSD or SSHD Removable Media : N/A Expansion Bays : Internal: One (1) 2.5-inch Expansion Slots : One (1) M.2 PCIe x1-2230( for WLAN), One (1) M.2 PCIe x4-2280(for storage) Graphics : Intel HD Graphics Audio : HD audio with Realtek ALC221 codec Communications : Intel  I219LM Gigabit Ethernet Port I/O Ports : Front: One (1) USB Type-C 3.0, Two (2) USB 3.0 (one includes fast charging), Audio I/O Rear: Four (4) USB 3.0, VGA, DP, RJ-45, Power : 65W Dimensions : 17.7 x 17.5 x 3.4 cm Weight : 1.3 kg

Operating System: Windows 10 Home & Pro MAR, Ubuntu Linux, Free DOS Chipset: Intel B250 Processors: Intel Core i3, i5, i7 7th generation Memory Support: Up to 64GB DDR4, Two DDR4 DIMM slots, 2400 MHz Hard Drive : HDD or SSD Graphics : Intel HD Graphics 530, 630 Audio : Realtek ALC662 Communications : 10/100/1000 Mbit/s Ports: 6 x USB 3.1, 2 x USB 2.0, microphone, headphone, serial, RJ-45, VGA, DisplayPort, HDMI Power : 180 W Dimensions : 145 x 293.2 x 366 mm Weight : 5.65 kg

Operating System : Windows 7 Home & Pro. MAR, Windows 10 Home & Pro MAR, Ubuntu Linux, Free DOS Chipset : Intel 370 Processors : Intel Core i3, i5, i7 6th & 7th Gen Memory Support : Two (2) SODIMM slots , Up to 32 GB DDR4 - 2666 Hard Drive : M.2, Sata or SSD Removable Media : N/A Expansion Bays : IN/A Expansion Slots : 1 M.2 2230; 2 M.2 2230/2280 (1 M.2 slot for WLAN and 2 M.2 2230/2280 slot for storage.) Graphics : Intel HD Graphics 630 Audio : Conexant CX20632 codec Communications : Intel® I219LM GbE I/O Ports : Front: 1 headphone, 1 headset connector, 1 USB 3.1 Gen 1, 1 USB 3.1 Gen 2, 1 USB 3.1 Type-C Gen 2, Rear: 1 RJ-45, 2 DisplayPort, 1.2; 2 USB 3.1 Gen 1, 2 USB 3.1 Gen 2 Power : 65W Dimensions : 17.7 x 17.5 x 3.4 cm Weight : 1.3 kg

Operating System : Windows 10 Home & Pro MAR, Ubuntu Linux, Free DOS Chipset : N/A Processors : Intel Core i3, i5, i7 8th & 9th Gen Memory Support : DDR4-2666MHz Memory, 2 x SODIMM Hard Drive : 2.5" HDD/SSD SATA or PCIe add-on cards Removable Media : N/A Expansion Bays : One (1) 12.7mm high tray-in, One (1) 2.5 inch bay Expansion Slots : 1 x M.2 SSD or Intel® Optane, 1 x M.2 WiFi Graphics : Intel Integrated Graphics 630 Audio : N/A Communications : Gigabit ethernet port I/O Ports : Front: 1 x USB 3.1, 1 x USB Type-C, Audio I/O, Rear: 4 x USB 3.1, Audio I/O, HDMI, DisplayPort, RJ-45 Power : 65W Dimensions : 179 mm x 36.5 mm x 182.9 mm Weight : Starting from 1.32 kg

Operating System: Windows 10 Home & Pro MAR, Ubuntu Linux, Free DOS Chipset: Intel Q270 Processors: Intel Core i3/ i5 / i7 6th & 7th Gen Memory Support: Two (2)SODIMM slots ,32 GB dual channel DDR4 2133 MHz Speaker: Internal speaker amplifier, single 4-ohms speakers Display: 23.8" IPS Wide Viewing Angle WLED, Full HD 1920x 1080 resolution and Ultra HD (4K) 3840 x 2160 resolution with anti-glare coating. Hard Drive: one 2.5-inch SATA or SSD or one M.2 SSD Removable Media: DVD+/-RW and DVD/ROM Optical Disc Drives (optional), SD4.0 Media Card Reader (standard) Graphics: Integrated Intel HD 630/610/530/510 Audio: Intel High Definition Audio with Waves MaxxVoice Pro Communications: I219-LM Ethernet LAN 10/100/1000 I/O Ports: USB 3.1 Gen 1 x 2 (one with Type-C) USB 3.1 Gen 1 x 4 (rear)/ USB2.0 x 2 (rear), HDMI 1.4 Out (rear), HDMI 1.4 In(rear, DisplayPort 1.2 Out (rear), Audio I/O (side), Audio Line-Out (rear), RJ-45 (rear) Input Devices: Standard Keyboard, Mouse (USB) Power: 80 PLUS internal Power Supply Unit Dimensions: 39.3 x 57.5 x 6.4 cm Weight: 7.1 Kg

Operating System : Windows 10 Home & Pro MAR, Ubuntu Linux, Free DOS Chipset : Intel Q77 Express Chipset Processors : Intel 3rd generation Core i7 Memory Support : Four DIMM slots, Non-ECC dual-channel 1600MHz DDR3 SDRAM, up to 16GB Hard Drive : 3.5": up to 1TB 7200 RPM SATA, 2.5": up to 500GB 7200 RPM SATA, 500GB Hybrid, 128GB SSD Removable Media : DVD+/-RW / DVD-ROM / Dell 19 in 1 Media Card Reader Expansion Bays : One (1) internal 3.5", One (1) external 5.25" Expansion Slots : One (1) HH PCIe x16, One (1) HH PCIe x16 (routed as x4), One (1) HH PCIe x1, One (1) HH PCI Graphics : Integrated Intel HD Graphics Audio : N/A Communications : Integrated Intel 82579LM Ethernet LAN 10/100/1000 I/O Ports : 4 External USB 3.0 ports (2 front, 2 rear) and 6 External USB 2.0 ports (2 front, 4 rear), VGA, DP, 2 L/I, 2 L/O Power : Standard 250W PSU Active PFC or optional 250W up to 90% Efficient Dimensions : 41 x 36 x 10.2 cm Weight : 7.9 kg