It is recommended to use the option "enter code" on a forum when you copy paste such outputs 
Code:
Bus 001 Device 002: ID 0846:9020 NetGear, Inc. WNA3100(v1) Wireless-N 300 [Broadcom BCM43231]
that your chipset , so you go to Linux Wireless to check compatibility and drivers issues ( it is recognizedv by lsusb so that a first good point )
wireless.kernel.org/en/users/Drivers/brcm80211
here you can read
Unsupported Chips
Chip
BCM43231
0846:9020
That is not good news, it seems to not be supported :
BCM43231 and BCM43236 (rev <= 2) have another architecture and
can't be easily supported by brcmfmac. They have less memory on the chip and can't run full MAC firmware, so they require implementing some extra code in the Linux driver. On the other hand they are not standard soft MAC devices, so they can't be supported by brcmsmac or b43.
Do you have any driver for linux from the manufacturer, on the setup CD?