WTB: USB cable for a Garmin eTrex Legend

[greatbuffalo]

I pulled out my old garmin to use as a backup unit but it has a serial cable. My USB/serial adapter no longer works. Looking for a Garmin 4 contact slide connector to USB. this is not the 4 pin barrel connector but the 4 contact type that slides onto the contacts at the top of the back.

If you got one you don't need let me know, if not, where I can find one.