CH340 Chip-Driven Product Description Windows Driver: USB to serial CH341/CH340 installation package available. Supports Windows 98/ME/2000/XP/Server 2003/VISTA/Server 2008/Win7/Win8/Win8.1 (32 Bit/64 Bit) and MAC. Validated with Microsoft’s digital signature authentication. Emulates USB device at the computer end as a standard Serial COM device. Includes a serial number and identification CH34X monitoring equipment swap library. Features Complies with Wireless 802.11 b/g/n standards. Supports STA/AP/STA AP in three operating modes. Contains a built-in TCP/IP protocol stack supporting up to 5 simultaneous TCP Client connections. Ports D0 ~ D8, SD1 ~ SD3 can be used as GPIO, PWM, IIC, etc., with a driver capability of 15mA. AD0 offers 1 channel ADC. Power input: 4.5V ~ 9V (10VMAX), USB-powered. Current consumption: Continuous transmission ≈70mA (200mA MAX), Standby. Note: Unfortunately, we do not offer support. Sorry for the inconvenience. Package Includes: 3 x NodeMcu Lua ESP-12E WIFI Development Board