CH340 series driver software functions
> Full-speed USB device interface, compatible with USB V2.0, only crystals and capacitors are required for peripheral components.
> Simulation of standard serial ports, used to upgrade original serial port peripherals, or add additional serial ports through USB.
> Serial port applications under the Windows operating system on the computer are fully compatible and require no modification.
> Hardware full-duplex serial port, built-in transceiver buffer, supports communication baud rate of 50bps~2Mbps.
>Supports commonly used MODEM contact signals RTS, DTR, DCD, RI, DSR, CTS.
> RS232, RS485, RS422 and other interfaces are provided through external level conversion devices.
> Support IrDA standard SIR infrared communication, supporting baud rate from 2400bps to 115200bps.
> The software is compatible with CH341 and you can use the CH34 driver directly.
>Supports 5V power supply voltage and 3.3V power supply voltage.
> > Available in SSOP-20 and SOP-16 lead-free packages, RoHS compliant.
CH340 series driver installation instructions
1. Press Winkey+R on the keyboard, enter "services.msc" in the pop-up "Run" dialog, or find "Services" under the "Computer Management" window;
2. Find “Device Install Service” and “Device Setup” in the service list Manager" two service items, confirm whether these two services are turned on. If not, you can click "Start" this service on the left.
Frequently Asked Questions about CH340 Series Drivers
What to do if the data is invalid
An effective solution - turning on the service, it works every time.
It turns out that Microsoft has In 8/8.1, the hardware device management service is independent. If the relevant services are not turned on when installing the driver, the "Invalid data" error message may pop up.
The solution is as follows:
1. Press winkey+r on the keyboard, enter "services.msc" in the pop-up "Run" dialog, or find "Services" under the "Computer Management" window;
2. Find “device install service” and “device setup” in the service list Manager" two service items, confirm whether these two services are turned on. If not, you can click "Start" this service on the left.
Other methods:
Search cmd "Run as administrator" from disk c. Enter the following command in the command prompt window:
net start deviceinstall
net start dsmsvc (press the Enter key line by line)
The same effect can also be achieved.
After completing the above steps and installing the driver, the "Invalid data" error should not pop up.
CH340 series driver update log
1: Brand new interface, refreshing, simple and efficient
2: Performance is getting better and better
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