AW-AM281-uSD is the evaluation board of AW-AM281SM, which support 802.11a/b/g/n 1x1 2.4 GHz/5 GHz with 12x12 Stamp form-factor. It has one antenna to support 1 (Transmit) x 1 (Receive) communications. The host interface supports SDIO for Wi-Fi® and SDIO for Bluetooth®.