SilverStone SOD04 is a slim DVD-RW optical drive for DVD/CD disc writing. With SATA interface, SOD04 provides maximum compatibility and stability when system building It can also be operated in either direction vertically or horizontally for maximum freedom when wearing. In addition, the SOD04 also comes with a 12.7mm bezel to fit both 9.5mm and 12.7mm optical drive slots.