On a Ricoh MFP with USB keyboard connected, the device displays the following error "Incompatible USB Device has been connected. Check the USB device.".
This has been observed with keyboard Model: 100266FNG (ACK-3400U). This may occur with other USB devices as well, such as card readers. See attached screenshot below.
Resolution / Workaround
This is a warning message produced by the Ricoh MFP hardware and is not related to Nuance / Kofax software. Even though this message is displayed, the USB device may function normally with Nuance / Kofax software.
To clear the message, contact your Ricoh MFP support representative, and request that the service mode of the MFP SP 5844-100 "notify support" be set to "0" and then reboot the MFP.
Note: This option may not be available on all Ricoh MFP models.See also: