Byte 3 Device Manager Error

One of my Byte 3's is showing an error in the Device Manager under System Devices. It is the

Intel Serial IO UART Host Controller - 5ABC and the error is :

This device cannot find enough free resources that it can use. (Code 12)

If you want to use this device, you will need to disable one of the other devices on this system.

Device Location is PCI bus 0, device 24, function 0

3 other entries for UART 5ABE, 5ACO and 5AEE are all reported as working properly.

The system seems to be working OK but I was wondering if you could give me any guidance on what the faulty device might be.

The only devices attached to the PC are a logitech wireless keyboard and mouse, and a Pulse-Eight CEC Adapter.

I have similar configurations on 2 other Byte 3's and on those the UART Controllers are not even listed under the Device Manager.

Info from BIOS is Core Version 5.12

BIOS Version V1.1.0-272BM5_1600_4GB_IR

Thanks

Mike