I added a second mouse to my server, to control my second VM, but now the VM fails to load.  After digging, I realized unRAID is getting/using/assigning the same address for both dongles, 045e:0745

 

USB Devices

Bus 006 Device 002: ID 8087:8001 Intel Corp. 
Bus 006 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 005 Device 002: ID 8087:8009 Intel Corp. 
Bus 005 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 002: ID 174c:3074 ASMedia Technology Inc. 
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 005: ID 051d:0002 American Power Conversion Uninterruptible Power Supply
Bus 001 Device 007: ID 045e:0745 Microsoft Corp. Nano Transceiver v1.0 for Bluetooth
Bus 001 Device 006: ID 045e:0745 Microsoft Corp. Nano Transceiver v1.0 for Bluetooth
Bus 001 Device 004: ID 050d:0201 Belkin Components Peripheral Switch
Bus 001 Device 003: ID 174c:2074 ASMedia Technology Inc. 
Bus 001 Device 002: ID 13fe:3d00 Kingston Technology Company Inc. 
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

 

Is there a solution other than buying a different brand dongle?

You could try passing USB controllers directly to the VMs using the sticky.

Yeah, i guess I might have to try that.  Unfortunately, I have them both plugged into a USB hub, so I'll have to move one in order to pass them thru separately that way.