1. Standard 2.5 to 3.5 inch hard drive caddy. 2. 2.5 inch hard drives supported: Support 7 / 9.5 / 12.5mm 2.5 inch SATA HDDs and SSDs. 3. Renew old hard drives: Put old 2.5 inch hard drive into this hard drive caddy to be a 3.5 inch hard drive; connect computer case to renew your old hard drives. 4. Specifications fall in with 3.5 inch hard drives: Made of ABS fireproof material; the dimension, weight and screw holes are similar with 3.5 inch hard drives. 5. 6 Gbps SATA3.0 program: Two SATA3.0 ports' theoretical velocity is up to 6 Gbps, backwards compatible with SATA2.0 / 1.0, saving much time for you. 6. Good heat dissipation: The side slots and open design are good for heat dissipation. 7. Hot-swapping supported: Support hot-swapping, no driver needed, plug and play. (motherboard supporting required). 8. Note : Not Including Hard Drive.
