Posiflex KS7517 17 1024 x 768 Intel Celeron B830 (1.8 GHz) Dual-core 4 GB DDR3 RAM Windows 7 - 64 bit Fan Free Terminal - Enhanced Power Performer Part Number: KS7517T11D1F Interface Type: 1 x RJ-11 port controls 2 cash drawers (max) USB: 7 x USB 2.0 Type A Port, (6 x on I/O Panel, 1 x in Side Cover) Serial: 4 Ports (3 x DB9 w / +5V / +12V BIOS Controlled Support, 1 x RJ-50 w / +5V / +12V BIOS Controlled Support) LAN: 1 x RJ-45 10 / 100 / 1000 Base T-Ethernet Other Ports: Backup Battery Port: 1 Port (Battery Optional) VGA Port: 1 x 15-pin female d-sub RGB analog (12V support for Posiflex LCD Monitors) Parallel Port: 1 Port (Optional P/N: 21862033420) Backup Battery Port: 1 x 2300 mAh / 12V Power: 12 V DC Power Adapter, 120W Dimensions: Generation 6 Base: 13.38 x 14.88 x 12.28 Generation 5.5 Base: 14.61 x 14.88 x 12.28