The official WCH CH343SER v2.2 download, plus a table of every chip it covers with its USB VID:PID, the name Windows gives it, and the Linux route — including the one PID that belongs to two different drivers.
On Windows, the driver for almost every USB microscope is already installed. Here is what to run instead of the missing CD, when the vendor software is actually worth it, and the one setting that turns a 6 fps slideshow back into 30 fps.
Which FTDI driver you actually need (VCP, D2XX or CDM), a clean Windows 11 install, the no-COM-port checklist, and how to beat the counterfeit FT232RL lockout.
Your USBasp shows up as an Unknown Device and avrdude can't find vid=0x16c0 pid=0x5dc. Zadig installs the missing libusb driver in a minute — download, exact steps and how to undo it.
The official WCH CH340/CH341 driver, hosted — plus the install order and the fixes for the classic Arduino no-COM-port problem.
The Silicon Labs CP210x universal driver, hosted — with the manual install route Windows 11 needs and the ESP-board troubleshooting.