AC Adapter: Yes Material: Aluminum / Plastic Dimensions: 7.6" x 4.92" x 1.77" Internal Interface: SATA I/II Fan: Yes Specifications: Chipset: Asmedia1051 + Asmedia1453 Material: Aluminum case, two sides plastic panel and internal metal tray Power: 12V 2A Power Adapter Maximum Capacity (per Bay): Up to 3TB (WinXP Not supported 3TB) Features: Universal fitting for 3.5" SATA I / II HDD Back panel Power ON/OFF switch Complies with SATA I / II, speed up to 3G/sec Complies with USB 3.0, speed up to 5G/sec Complies with eSATA, speed up to 3G/sec backward compatible with USB2.0, USB1.0