Startech 3.5" Aluminum USB 3.0 External Sata Desktop Drives S3510SMU33, 1 - Drive Connectors: SATA Data & Power Combo (7+15 pin), 1 - Host Connectors: USB Type-B (9 pin) USB 3.0, Interface: USB 3.0, Number of Drives: 1, Drive Size: 3.5in, Compatible Drive Types: SATA, Drive Installation: Fixed, Fan(s): No, Chipset ID: ASMedia - ASM1153E, 1 - LED Indicators: Power & Activity The S3510SMU33 USB 3.0 hard drive enclosure enables you to connect a 3.5in SATA hard drive through an available USB port. The HDD enclosure offers a versatile solution for increasing the storage/backup capabilities.