6223B-SRD is a low profile of Wi-Fi + BT Combo module with LGA (Land-Grid Array) footprint, board size is 15mm*13mm with module thickness of 1.5mm. It provides SDIO interface for Wi-Fi to connect with host processor and high speed UART interface for BT. It also has a PCM interface for audio data transmission with direct link to external audio codec via BT controller. The Wi-Fi throughput can go up to 150Mbps in theory using 40MHz bandwidth and Bluetooth can support BT2.1+EDR/and BT4.2 systems.