Lee,
I have to confess I mixed the supplied USB with a couple of others I had on my desk so I can't identify which one came with the PAW.
However, if you can identify yours by length, the 3 cables I have are 75cm (no markings), 90 cm (an Asus logo on the std USB plug but no other markings) and one of 120 cm (High speed, E330859, style 2725 28AWG/2C/1P, Ft-1 ZM 80C & 30V).
Whilst I was using the new iHarbort MS031, bought specifically for this application, I had the PAW plugged into the 2.1A outlet but I also plugged my N7 into the 1.0A outlet when I went into the garden for about 30 minutes, until it went flat.
The mains USB source is an Asus 5.2v 1.35A single outlet plug with a 3 metre shielded cable (E314459) but otherwise to the same spec as the 120cm one above.
I appreciate your help.
thanks
Mike