Description from supplier:
CH340 module instead of PL2303 , CH340G RS232 to TTL module
1. New original CH340G chips, the chips are STC official recommendation USB to TTL chips will not appear due to a different drive / different computer as a result of incompatibilities.
2. Golden appearance, quality and upscale yellow pin, pin durable than the black market, beautiful.
3. Not only have the power light PWR, TXD and RXD LEDs also reserved RTS, CTS location convenient and intuitive know whether the product is at work in the absence of the instrument case.
4. 3V3 and 5V by a short circuit risk selection.
5. Support WINDOWS 98 / ME / 2000 / XP / Server 2003 / VISTA /Server 2008 / Win7 / Win8 32 Bit / 64