Windows 10 Home & Pro MAR, Ubuntu Linux, Free DOS

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