iwconfig pendrive

iwconfig
lo        no wireless extensions.

wlan0     802.11bgn  Nickname:"rtl8191SEVA1"
          Mode:Managed  Frequency=2.422 GHz  Access Point: Not-Associated
          Bit Rate:135 Mb/s
          Retry:on   RTS thr:off   Fragment thr:off
          Power Management:off
          Link Quality=10/100  Signal level=0 dBm  Noise level=-100 dBm
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0

eth0      no wireless extensions.

wlan2     IEEE 802.11bg  ESSID:"lifestudio3d"
          Mode:Managed  Frequency:2.462 GHz  Access Point: 00:1E:2A:04:B6:F6
          Bit Rate=54 Mb/s   Tx-Power=8 dBm
          Retry  long limit:7   RTS thr:off   Fragment thr:off
          Power Management:on
          Link Quality=32/70  Signal level=-78 dBm
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0