The Xtreme N Notebook ExpressCard (DWA-643) is powered by Xtreme N technology to provide superior wireless performance in the home or office with the draft 802.11n compliant RangeBooster N™ Router (DIR-625). However the DIR-625 does not support the bridging mode. You may consider getting the DWL-2100AP which supports the five modes: a Wireless Access Point, a Point-to-Point (PtP) bridge with another DWL-2100AP, a Point-to-Multipoint (PtMP) bridge, a Repeater for range extension, or as a Wireless Client. Using the previous firmware version for the DIR-655 will allow you to use the WDS mode so you can enable the bridge mode between two separate locations. There are many antennas out in the market, however you should consider using the D-Link's Xtreme N Antenna (ANT24-0230) with the DIR series routers to avoid the compatibility issue.