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.
MATSHITA DVD+-RW Driver
File: cdrom.inf_x86_neutral_db87d184bc84f910.zip
7d5f09af0386504eaa3753c2414878ac3271541cd9c64221b60853f3d3e9430d
MATSHITA DVD+-RW Driver
File: cdrom.inf_amd64_42e9c29f0affc440.zip
12aa577ef2f1672cf0e7a70a4753eea91cbe10d7b61dee1cf8756776f9f89ffd
MATSHITA DVD+-RW Driver
File: cdrom.inf_amd64_42e9c29f0affc440.zip
MATSHITA DVD+-RW Driver
File: cdrom.inf_amd64_cf04adb457be1724.zip
05c0ba50354388c2f06c974bc294f6502c08aed8fce7be93066e59c1bd1210a5
MATSHITA DVD+-RW Driver
File: cdrom.inf_x86_a76623cebb64c613.zip
82c9011dbf3649ce6bcec8d483a1afbd4a4b00dfae1cb62cbd40575d91160312
MATSHITA DVD+-RW Driver
File: cdrom.inf_amd64_neutral_8363d00ecae4322d.zip
9f8ca9cc6921a8f0f160f911551b850542827307306f93a9bedab2737502289a