The BH8-282 hand Power supply has two DB9 Connectors, one male and one female '''DB9 Male''' ||Pin||Signal|| ||1||User line A|| ||2||NC|| ||3||User line C|| ||4||NC|| ||5||NC|| ||6||User line B|| ||7||NC|| ||8||User line D|| ||9||NC|| '''DB9 Female''' ||Pin||Signal|| ||1||NC|| ||2||CAN H or RS232 RX|| ||3||RS232 TX|| ||4||NC|| ||5||Ground|| ||6||NC|| ||7||CAN L|| ||8||NC|| ||9||NC||