I have been having problems with an external DVD writer (who hasn't!). So I already have a slow DVD writer, and a DVD reader, the question I have is - can you have 3 drives on the same machine. I have 1 HDD presumably on one cable, and the 2 DVD drives on another. I do have a spare 5.5" bay. Will adding the writer as a slave on the HDD cable slow both up. Would I be better ditching the DVD-ROM drive instead. I need to know what's best as I'm about to ruin my 3-year warranty on the external Samsung (Gericom from Aldi UK) by unscrewing it.