Verbatim doesn't include any media list and their supported speeds, so we used several discs to check the performance of their external Blu-Ray writer. We start with the CD format, you should expect writing speeds up to 24X.

PlexDisc 700MB CD-R White Top

Writing was 24X with P-CAV writing strategy

almost perfect reading curve

Writing quality seems very good.

Ritek Pro 52X CD-R White top

Again up to 24X with P-CAV writing technology.

The Pioneer drive can read the same disc fairly well, even the reading curve is slight messed after 40mins.

Using the Disc Quality measurements from the same drive, we can see good C1 errors with some indication of C2 spikes.

Verbatim 700MB CD-R White top

Up to 24X writing speed with P-CAV writing technology

The Pioneer drive can read the same disc perfect

Using the Disc Quality measurements for the three tested drives we got some indication about error rates at the whole surface of the disc.