Before tech manufacture Panasonic started using the name Panasonic on banding on many optical drives the its products bore the Matsushita nameplate. The UJ-840S DVD RAM drive is branded as Matshita and sometimes both Matshita Panasonic, this optical drive is used in the vast majority of laptop/notebook made by HP, Sony, Acer and others.
The technical specs of this device can read CD-ROMs at 24x, and reading speed for DVD-ROMs was 8x.
After some upgrades and fresh installs of Windows users have had issues getting the MATSHITA DVD+-RW UJ8D to be recognized or function. The drivers below are the best way to fix this issue.