IEEE802.11b/g/n Wireless LAN Module with integrated Flash Memory Built-in Antenna Frequency band 2400MHz to 2483.5MHz (channel1 to channel13) 4Mbit Flash memory (SPI) Built-in EEPROM TCP/IP protocol stack Security features: 64bit/128bit WEP, TKIP, AES USB 2.0, SDIO, UART (up to 921600bps) Power supply 3.3V