We know this about USB:

-the USB device has to be self-powered (e.g., battery- or AC-powered. Note: many USB hubs describe themselves as "self"-powered to mean "bus"-powered)

- the 770 has a type Mini B USB jack (eg, "female"); at least I think it's called a Mini B. You can see a converter at store.yahoo.com/abccables-store/ca-000306.html

Type A female to Mini B male gender converter


I guess you could use a converter to get into the Nokia 770.

Does anyone know any USB keyboards that work with the 770? Does anyone know of any battery-powered (or AC-powered) USB keyboards?