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This product is a Type-C to TTL serial port module, using CH340 USB bus conversion chip, with 2 indicator lights on the board, which are communication indicators. Because there is no serial port on our current computer, we generally use a USB to serial port module, with only one purpose, to map the computer's USB port to a serial port.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.