The Microchip Technology ATWINC3400-MR210UA is an RF Transceiver Module supporting WiFi 802.11b/g/n protocols. It operates in the 2.4GHz frequency band.
The Microchip Technology ATWINC1510-MR210UB is an RF Transceiver Module supporting WiFi 802.11b/g/n protocols. It operates in the 2.4GHz frequency band.