HDD cage for selected Be Quiet cases. Perfect installation for one hard drive or up to 2 SSDs. Convenient, tool-free installation of a hard drive. Decoupled clips for minimal vibrations and quiet operation. Compatible with Be Quiet cases: Dark Base 901 series, Dark Base 701, Shadow Base 800 series. The HDD cage is ideal for anyone looking to install hard drives professionally, easily, and securely in Be Quiet cases.