Canopus legacy drivers are NOT on the modern Grass Valley site. Use these sources:
The "PC-211" might be a Texas Instruments TSB43AB22A FireWire controller (common on Canopus cards). In that case: canopus u13-pc-211 driver
The Canopus U13-PC-211 is a legacy capture/video I/O card used for analog/digital video capture and editing workflows. A driver is required to enable the operating system to recognize the card and allow video capture/editing software to access its inputs and outputs. Canopus legacy drivers are NOT on the modern
For your reference, here are the specs for the unit associated with that part number: The Canopus U13-PC-211 is a legacy capture/video I/O
The identifier "U13-PC-211" does not correspond to a specific model name of a Canopus device. Instead, investigations reveal that this string is a Hardware ID (VID/PID) associated with the internal chipset used in various video capture hardware.
Specifically, this identifier points to a Conexant/Roxio Video Capture USB device, often marketed under the Roxio "Easy VHS to DVD" product line. Because Canopus (now Grass Valley) was acquired by Thomson and later associated with Roxio for consumer products, users often conflate the brands, or the hardware is misidentified by Windows generic drivers.