Plextor PX-755UF Installation And User Manual page 43

Q: In the list of Recommended Media, what's the difference between
"rated," "compatible," and "recommended" speeds?
A: "Rated" is the manufacturer's rated write speed for the media; it's what
you see on the box. "Compatible" is a looser term that indicates the
maximum safe writing speed according to the manufacturer.
"Recommended" is the Plextor-recommended speed for ensuring top-quality
writing using this media. Plextor tests media and enters the "compatible" and
"recommended" speeds into the drive's media catalog.
For example, 8X-rated media listed as "12X writing recommended" and
"16X compatible" indicates the manufacturer believes this 8X-rated media
can be written at 16X. Plextor factory testing has determined you will
achieve the highest quality write at 12X. Plextor's testing also indicates you
can write this media at 16X and still achieve good quality, although perhaps
not as high as at the recommended speed.
Just because the vendor rates a disc for a certain speed doesn't mean that the
disc will give you a high-quality write at that speed. However, the PoweRec
technology in your Plextor drive ensures you will write at the highest
possible speed that still achieves high quality.
Q: What are the transfer rates for the different interfaces?
A: Different interfaces have different maximum transfer rates. The following
table compares the transfer rates for the different interfaces.
Interface
USB 2.0 (Hi-Speed)
USB 1.1 (Full-Speed)
IEEE 1394 (FireWire)
Actual transfer rates in the real world depend on the type of media and
software you're using, and on the type of data being transferred.
Section 5. Frequently Asked Questions
Maximum Transfer Rate
480 Mbps max.
12 Mbps max.
400 Mbps max.
PX-755UF Installation and Users Manual
37