No networks detected by Centrino Wireless-N 2230 adapter

Hi everyone,

I got a Centrino PCI Express half-mini adapter and installed in into the built-in slot on my HP 3500 SFF desktop.

I installed drivers and version 17.1 of PROSet, the adapter is fully installed right now, but doesn't detect any WiFi networks, N class, G class or any other.

Does this adapter require an external antenna to detect any networks at all?

Does anybody else have this issue with this adapter?

Thanks in advance!