HP GU90N 15 SATA Slim DVD-RW Burner Drive

HP GU90N Slim DVD-RW Replacement

The HP GU90N is a 15 mm slimline optical drive that reads and writes CD and DVD media through a SATA interface. It is built as a direct replacement for compatible HP laptops that originally shipped with this drive. The unit installs into the standard slim optical bay without adapter brackets. It suits users who still need physical media access on a portable system.

Sustained Write Behaviour

During long burns the drive maintains a steady write speed rather than peaking and throttling. The slim form factor limits heat dissipation, so the firmware paces the laser to keep temperatures stable across a full disc. This avoids buffer underruns on dual-layer media. Performance stays consistent from the first sector to the last.

Upgrade Context

This drive replaces a failed or missing internal DVD-RW in a supported HP notebook. The jump is worth it when the original unit no longer recognises discs, reports write errors or has been removed entirely. It does not add Blu-ray capability, nor does it fit ultra-slim 9 mm bays found on newer ultrabooks. Buyers who need Blu-ray playback or a thinner drive must look elsewhere.