I don't have a PSP Power Supply because I don't have a PSP.
I own a switchable (3V- 12V) Power Supply for my GP2X if the batteries are empty. I've buyed it from ED, it is a good (and small! ) supply (right one)
The Cable feels a little bit "cheap" compared to the other Adaptor on the left (from my Philishave
) which is even a little bit smaller than the Power Supply for the GP2X.
I think my GP2X Switching Adapter would also work for the Pandora but it only has 1000mAh, I don't know if this could be a Problem.
Well, whatever the Pandpra Adapter will be, It should have a good cable and should be small.
And if we need some exotic USB-Adapters (from mini to maxi or on the go to whatever is needed to do USB Charging), they should be included into the Pandora Package.