A good bet would be a 3.5in case with power brick. If that is what your DVD writer is in, it should work. Other considerations would be how it is connected. and whether or not you have SATA or PATA. It is alm ost a given that a large HDD will be SATA. If the DVD writer is SATA, it would be easy. If not, you will be best served by a 3.5in SATA external case with power.