D-Link DIR-300 rev B1

This device is on the DD-WRT Supported Devices table.

Device page in OpenWRT wiki.

DIR-300 H/W rev. B1 hardware are same as in DIR-600 H/W Rev. B1

"8WRGN23..3A1G" is silkscreened on the board in the FCC photos.
 * This is the same board ID as the Keebox W150NR v1.