@gb.123 In XO on the "Advanced" tab for the VM I added the GPU devices by first adding them both as "Attached PCIs" near the bottom of the page. I also disabled the "VGA" option under "Xen Settings" and clicked the "+" next to "GPUs" and added the vGPU type "passthrough () 0x0" which was available on the drop-down list. I don't know if it matters or not, but I also set the "Static Max", "Dynamic Min", and "Dynamic Max" memory limits under "VM limits" to the total RAM size I allocated the VM.