This isn't really a case mod, but it's a question about the case for the HP TP01-1214 Desktop PC. I have a customer who bought this model PC without a DVD drive in it. Now they would like to add one. I cannot find a DVD drive for this model HP (TP01-1214). But I know this case is used for several HP models. Does anyone know which type of model is compatible with this case that I could look for a DVD drive for? Thanks!