This usually means the computer is trying to use a generic Windows driver instead of the specific cable driver.
Solutions:
The Amsamotion USB-CN226 is a USB 2.0 to RS-232 serial converter. It features a DB9 male connector on one end and a standard USB-A on the other. Inside its housing lies a bridge controller chip—most commonly a clone of the Prolific PL2303 or a CH340 variant. amsamotion usb-cn226 driver download
Because Amsamotion does not maintain a public, centralized driver database like HP or Dell, users often mistakenly download malware-ridden “driver updater” software. Do not do this. Instead, follow the official methods detailed below. This usually means the computer is trying to