ALFA Network AWUS036EW

Overview
Old product page (via archive.org)
 * They're apparently throwing their driver sets on SourceForge. ಠ_ಠ

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