Wireless USB adapter?

I have a 3Com wireless modem/router which came with a 3Com wireless USB
adapter.
The adapter has failed and I need to get another. Am wary of buying another
3Com in case it fails as well.
Mate tells me that Belkin are the bees knees for wireless adapters, any
comments?
Should I get the type with a desk stand and trailing cable?
It must support WPA encryption and be compatible with the 3Com modem/router.

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Kenny Cargill