D-Link DP-311U


 * 1x USB 1.1 port, 802.11b, 11Mbps

"PRS201WU REV-A2" is silkscreened on the board in the FCC photos.
 * Device uses a Cypress SL811HST USB controller.

The latest firmware available from the D-Link website is compatible with both.
 * There are multiple hardware revisions of this device.