HGST Travelstar Z5K320 HTS543232A7A384Product 320GB 5400 RPM 7mm laptop hard drive

320 GB 7 mm laptop drive

The HGST Travelstar Z5K320 is a 2.5-inch internal hard drive with a 7 mm z-height, making it a direct replacement for standard 9.5 mm drives in notebook PCs, external enclosures and gaming consoles. It uses a SATA interface and spins at 5400 RPM with an 8 MB buffer. The bare-drive packaging suits system builders and upgraders who need a slim mechanical drive.

Capacity and headroom

At 320 GB the drive holds operating-system files, applications and a moderate media library for everyday portable computing. The single-platter design keeps the physical profile thin, but the 5400 RPM spindle limits sustained throughput compared with faster mechanical or solid-state alternatives. Heavy multitasking or large-game installations will exhaust both space and speed headroom quickly.

Thermals noise and power

The Z5K320 is marketed for best-of-breed acoustics, delivering near-silent operation in typical notebook workloads. Its low spindle speed and slim form factor keep heat output modest, so the drive runs cool inside thin chassis without demanding aggressive fan curves. Power draw remains low during active reads and writes, helping preserve battery life in mobile devices.