If none of these helps, you can for further assistance. Be attentive to download software for your operating system. Please scroll down to find a latest utilities and drivers for your USB-SERIAL CH340 (COM3) driver. Try a driver checking tool such as.Īs there are many drivers having the same name, we suggest you to try the Driver Tool, otherwise you can try one by on the list of available driver below. You should uninstall original driver before install the downloaded one. Please identify the driver version that you download is match to your OS platform. Q: Why my USB-SERIAL CH340 (COM3) driver doesn't work after I install the new driver? Common questions for USB-SERIAL CH340 (COM3) driver Q: Where can I download the USB-SERIAL CH340 (COM3) driver's driver? Please download it from your system manufacturer's website. USB-SERIAL CH340 (COM3) driver is a windows driver. 30 day Trial: Toshiba BT Stack v91001.zip: 77.9MB. Terminal software alternative 1 for Windows: TeraTerm.zip: 7.32MB: Putty: Terminal software alternative 2 for Windows: Putty.zip: 444KB. Download drivers for most types of USB to serial adapters and converters. USB to serial drivers for most serial RS232 devices.
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