SMC SMCWEBS-N

Product page

On the OpenWrt wiki
 * Serial pinout, header J2 = <-- RP-SMA connector [VCC] (Rx) (Tx) (GND) (UNU)
 * Stock firmware image is 3.2MB, Flash is probably 4MB

The FCC ID printed on the label is V8YSMCWBR14SN3.