If your Mac is no longer supported by Apple, we unfortunately will be unable to support the device.
You can check the model status here https://support.apple.com/en-us/HT201624
It is a good idea to discuss this with us before remove the Mac from use. We request this is done via an Oxford Service Manager Service Request. Here you can give us full details, we can then schedule the decommissioning process with you.
Please navigate to the link provided, select Decommission Device, fill out the request* and we will come back to you. Submit a Request to Decommission
*This will automatically generate a ticket request