... card ( support for 3G network )MinipciE interface:2 PCIEx1supports WIFI,3G module, SSD hard diskSATA:2 SATA II, support for 3GB / SSerial ... port:1Port COM, COM1: RS-232 mode ( board pin )USB interface ... the rear panel, a 4board pin )The PS / 2 interface: PS /2 keyboard interface ( board containing a 6PIN keyboard and mouse pin )Network ...