Replacement DVD drive for Dell Inspiron 6040



A friend of mine has an ageing Dell Inspiron 6040 and the optical drive has now packed in.

They seem to be very easy to install but I’m having difficulties finding out what replacement drives would be compatible with this particular laptop.

Is anyone familiar with replacing optical drives in Dell laptops?

Can anyone point me towards specific models?

It’s an old laptop too so the cheaper the better as he doesn’t want to spend too much on it. I’ve seen secondhand original Dell ones available online but he’d rather buy a new replacement.