Avolusion HDDGear external [PASS] portable storage system 2-Terabyte (2000GB) USB Hard Drive featuring with 7200RPM, 32MB Buffer SATA Hard Drive with 1-yr Warranty. This is single bay ultra slim 2TB USB Hard Drive w/ high performance in value price! Fan-less cooling design keeps your drive running cool and quiet . Durable aluminum hard drive chassis provides excellent heat dissipation.