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Motorola XPR 4550 XPR 5550 Programming Cable Pinout [message #3103] Fri, 22 May 2015 09:46
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Motorola XPR 4550 XPR 5550 Programming Cable Pinout

This needs a simple USB cable with no other parts involved besides the PMLN5072 connector. Cut the one side of the USB cable that is not needed. Wire up as follows:

White Data - Pin 2
Green Data + Pin 1
Red Vbus Pin 3
Black ground Pin 4

Looking at the back of the radio the connector facing you the pins are as follows:

Upper left side of the connector is pin 2
Lower left side of the connector is pin 1
Pin 4 is next to pin 2
Pin 3 is next to pin 1

Some people have mentioned that the green and white wires where swapped, so you might want to check your USB connector before making the assumption that the white and green wires are what they really say they are. Some cables may be swapped depending on who made them. Some cheap cables might not follow the standard color scheme.
I was told by a Motorola rep that the front microphone connector will not program everything on the radio and is not recommended because it is some proprietary system Motorola has. However the back will program everything.

Motorola XPR Programming Cable
The left cable is the one just made for under $10. The one on the right was purchased by another ham for more than $30. These cables sell on ebay for as much as $60. It gives a reason to cut off USB cables from old mice and keyboards and keep them around for cables like these.

[Updated on: Sun, 31 May 2015 23:46]

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