Zalman VE-200SE Black 2.5inch USB2.0 SATA 5400/7200rpm eSATA 3GB/s Number of Total Expansion Bays: 1. Number of 3.5 Bays: No. Number of 5.25 Bays: No. Number of 2.5 Bays: 1. Number of 2.5/3.5 Bays: No.