ASUS PL-X31M

Overview
"PI699E2.4P12A-3-EUP-MB REV1.0" is silkscreened on the PCB.
 * This is a Shenzhen Gongjin Electronics (SGE) P/N.
 * It is likely this 200Mbps Mini Powerline Wall Mount Adapter.

PL-X32M may be the same product sold in a two-adapter kit.

Links of Interest

 * Reviews on FoxNetLab