Sony SNCA-CFW1

Product page
 * SNCA-CFW1 is an 802.11b wireless LAN card designed exclusively for use with the SNC-RZ25N, and the SNCA-AN1 is an external pole mount directional antenna for increased range and direction.

The antenna connector on this device is assumed to be MMCX.

There is a label with a MAC in the FCC photos (00:30:5B OUI, Toko).