Netgear XAV1601 v2

Overview
XAVB1601 is a set of two of these adapters.

Links of Interest
FAQ

Netgear Selects Broadcom HPAV Solution for Powerline Products - This claims that the XAV1601 uses a Broadcom BCM60321. The Firmware Upgrade Utility Version 0.2.0.9 released by Netgear contains Atheros INT6400 firmware.