This cable is based on the Prolific PL-2303TA USB to Serial Bridge Controller, and designed specifically for quick and easy programming via USB port of the following Motorola handheld transceivers: EX500, EX560·XLS, EX600, EX600·XLS, GL2000, GL2500R, GP328 Plus, GP338 Plus, GP338·XLS, GP344, GP344R, GP346, GP366R, GP386, GP388, GP388R, GP628 Plus, GP638 Plus, GP644, GP688, PRO5150 Elite, PRO7150 Elite, PTX700 Plus, and PTX760 Plus. The power supply is done over the USB interface, following the USB 2.0 specifications. This is not a straight forward cable, there is an internal converter circuit board (interface) mounted in the USB shell. This single programming interface cable completely replaces Motorola RLN4008 Radio Interface Box (RIB) with JMKN4123 (AAJMKN4123, MDJMKN4123) cable.

The cable communicates directly with a computer through the now popular and standard USB interface. A physical Serial Port connection is not needed since the supplied drivers emulate a virtual Serial Port which communicates with a radio at the required TTL voltage levels. The programming cable is compatible with all Windows operating systems that support USB operation. 

Windows driver page: http://www.prolific.com.tw/US/ShowProduct.aspx?p_id=225&pcid=41

Please note that the Programming Software is not supplied with the cable.