Belkin F5D8231-4 v5

Overview
OEM Gemtek WRTR-227GN (WRTR-227GN_V00 / WRTR-227GN_V02)

The switch chip used may be a IP175C or an IP175D. It is shown with an IP175C in the FCC photos (V00 board version) and the IP175D appears to be used in a production model (V02 board version).