Connecting the Scanners to a Computer
For scanners that use an AC adapter (DR-2010C, DR-2510C, DR-3010C)
When connecting the flatbed and the Canon DR-series scanner, do not use the USB cable supplied with the DR-series scanner. Instead, use the two USB cables supplied with the flatbed.
For scanners that do not use an AC adapter (DR-4010C, DR-6010C, DR-6050C, DR-7550C, DR-9050C)
If you own multiple Canon DR-series scanners
If you own multiple Canon DR-series scanners, with the exception of the Canon DR-series scanner connected to the flatbed, do not connect any other scanners to the computer, regardless of compatibility. Proper functioning is not guaranteed if multiple scanners are connected.
