If you’re looking for more storage capacity than CDs or single-layer DVDs can provide, you can try a DVD drive compatible with double-layer (DL) DVD discs, which offer up to 8.5GB of storage.
Higher capacities are supported on Blu-ray drives, available on select Dell Inspiron™, XPS™, and Alienware™ desktop and laptop systems.
Dell OptiPlex desktops offer two types of drives in two different forms, slim and standard. The offerings are DVD-ROM (which can only read CD and DVD) and DVD +/- RW (which can both read and write a CD and DVD). The base speed of reads and writes is measured as 1X for CD = 0.15MB/s and for DVD = 1.3MB/s.