The side connector is a 10 pin Hirose, Part number H2868-ND at http://www.digikey.com/

The proper mating connector housing is a Hirose DF11-10DS-2C. 

Typical sockets include Hirose DF11-2428SC (application and wire-gauge dependant).

All available at http://www.digikey.com/
||Pin||Signal||
||1||48V||
||2||Power GND||
||3||User line 1 (USB 5V)||
||4||User line 2 (USB data-)||
||5||RS232TX/CANH||
||6||RS232RX/CANL||
||7||User line 3 (USB data+)||
||8||User line 4 (USB GND)||
||9||Earth ground||
||10||No Connection||