Alfa Network AWUS036EW

Wikidevi Notes
They're apparently throwing their driver sets on SourceForge. ಠ_ಠ

Additional specifications, per ALFA Network's product page, follow...
 * 5 dBi dipole antenna included
 * Transmit power: 27 dBm ± 2 dBm
 * Receive sensitivity
 * -70 dBm @ 54Mbps (OFDM)
 * -83.5 dBm @ 11Mbps (CCK)
 * Dimensions (L x W x D): 90 mm x 28 mm x 10 mm