Usage: device.connection vmid deviceKey connect
Connect/Disconnect the virtual device specified
example: disconnect cdrom device from VM
Get the ID of your VM in question using (scroll using shift page up / page down if you have to)
Write down the VM ID for example it can be a number like 4400
Find the key for your VirtualCDrom by querying the hardware devices for your VM.
Scroll up again and write down the Key, in my case it is 3000
Now disconnect the CDrom device by running:
vmsvc/device.connection 4400 3000 false
Use true if you want to connect the device.