Automatic Mode for the SR-IOV devices enabled on VM as PCI-passthrough is not visible.
1. Select the VM
2. Right Click > Edit Settings > Add New Device
3. Select PCI Device
4. Check the Device Setting
Expected Behaviour - Automatic Mode
The Automatic Mode is not present for the port groups that are attached to the uplinks with SR-IOV disabled.
To effectively use the SR-IOV interfaces on the VM as PCI-passthrough device, choose the port group that is attached to the uplinks with SR-IOV enabled.
The uplink has SR-IOV enabled or not can be checked from -
1. Select the host in the inventory.
2. Select the Configure Tab > Physical Adapters
3. Check SR-IOV Status field.