The Genuine APPLE MacBook/Pro GSA-S10N DVD-RW Super Multi Laptop Drive 678-0558A OEM is an internal optical drive designed for laptops, PCs, and Macs. It features a 5.25-inch form factor and a sleek silver color. This DVD-RW drive has a write speed of 8x and supports various readable and writable formats including DVD+RW, DVD+R Dual Layer, CD-R, and DVD-RW. With a cache size of 2MB, this Hitachi-LG Data Storage product is compatible with MacBook 13" and MacBook Pro 15" models, offering duplication features for added convenience.