• Add a second unit to your laptop by replacing the optical drive (CD/DVD-ROM) to improve performance and increase capacity. • Made of aluminum alloy, it is lightweight and offers fast heat dissipation and shock resistance. • Hollow design at the bottom to improve air circulation and heat dissipation. • Includes four screws to secure the hard drive, with precise hole placement for anti-vibration protection. • Compatible with SATA III, supports speeds of up to 6 Gbps and allows hot swapping. • Provides up to 500 GB of additional space on the internal hard drive. • Easy installation: unscrew, insert the hard drive, and tighten the screws. • Product dimensions: 1.3 cm x 1.3 cm x 1.3 cm.