USB-1747-CP3 is Allen Bradley AB SLC 5/03/04/05 PLC Programming Cable,it is USB-9Pin Female Interface,Support: WIN7( 32/64 bit)/XP/VISTA
usb-1747-cp3 driver download
1756-cp3 vs 1747-cp3
The 1747-CP3 is an ordinary serial cable. Copper, rubber, and steel. The 1756-CP3 is the same cable with a slightly lower-profile right-angle end on it. They are usable interchangeably with SLC-5/0x and ControlLogix family controllers.