The DVD Drives used in the 2080, 3575 and 3576 are thought to be identical, interchangeable 4x drives while the DVD Drives used in the 2160 are known to be 8x drives.
Differentiating these drives from the numbers stamped on the DVD Drive top cover alone is somewhat problematic as the first line of that indicia is common between the 4x and 8x Drives. The second line of the indicia may give a clue as to the DVD Drive’s identity but the best model identifier is found on the sticker found on the rear of the DVD Drive.
There are three different areas where DVD Drive indicia may be observed without dismounting the DVD Drive:
1-As mentioned, non-model specific indicia is stamped into the DVD Drive top cover toward the rear. The DVD Drive top cover indicia for my 2080 model of July 2007 manufacture may be seen in the first photo. The DVD Drive top cover indicia for my 2160 of December 2008 manufacture may be seen in the second photo. Notice that the first line in both photos shows the same N78FODUM number for the 4x and 8x DVD Drives. The second line of the indicia varies slightly, 1VM222812 (1) for the 4x 2080 DVD Drive, and 1VM222812 G (1) for the 8x 2160 DVD Drive. This second line
may or may not be a model-specific production or specification code.
2-The
actual model-specific DVD Drive “model number” is found on a sticker on the back of the DVD Drive. The first line is the actual model-specific “model number.” The DVD Drive rear sticker for my 2080 of July 2007 manufacture may be seen in the third photo. The 2080 DVD Drive model number is shown as N78F4DUN. The “4” in the 2080 DVD Drive model number
probably indicates a 4x drive. The DVD Drive rear sticker for my 2160 of December 2008 manufacture may be seen in the fourth photo. The 2160 DVD Drive model number is shown as N78F8EUN. The second “8” in the 2160 DVD Drive model number
probably indicates an 8x drive. It appears that the second line begins with a production date code where the 2080 date code is 070704 (July 4 2007) and the 2160 date code is 081205 (December 5 2008).
3-There is a bar code sticker on the left side of the DVD Drive (as viewed from the front of the drive). This bar code number is thought to be the serial number (production sequence number) for the specific DVD Drive. The serial number bar code for the 2080 DVD Drive is seen in the fifth photo. (Since the AVS Forum limits attachments to five per post the serial number bar code photo for the 2160 DVD Drive is not posted.)
