Raspberry pi freezed on wifi adapter

Question

I have a type B Raspberry Pi running perfectly with USB keyboard and USB mouse both plugged in.

However pi freeze in all the following combinations,

1. USB keyboard + USB wifi adapter (CUI)
2. USB mouse + USB wifi adapter (GUI)

In CUI, pi reboots every time I hot plugged in the adapter, and freezes on asking for login id. If I boot pi with wifi preplugged in, pi also freeze on asking for login id.

In GUI, it does not reboot but freeze when I hot plugged in the adapter. It is true when I boot pi with preplugged in.

Could someone please advise me how to fix this?

Answer 1

Your raspberry pi does not have beefy enough USB ports to power the wifi adaptor. Get a powered USB hub.