Original CH340G chip
Operating voltage: 3.3V to 5V
Color: black / gold
Operating temperature: -40 ~ 85 ºC
Support RTS, TXD, RXD, GND and CTS common flow control signals
Dimensions: 55x23x11mm (LxWxH).
Full speed USB interface
When using 5 V operation, supply 5 V to the VCC pin and decouple the internal 3.3 V reference with a 4.7 to 20 nF capacitor from the V3 pin to ground
When using 3.3V operation, attach the V3 pin to the VCC pin and provide 3.3V power.
