The new Lenovo Removable Disk EXchange (RDX) USB 3.0 removable disk backup solution is designed to address your increasing capacity and backup requirements, and reliably and cost-effectively protect your business valuable assets, while alleviating the deployment and management complexity of traditional tape drives. It uses a rugged removable disk cartridge and docking station to provide an easy-to-use, highly secure, fast, and portable answer to your data protection concerns. RDX Internal USB 3.0 Drive (No cartridge included with the drive)