Why is my USB 2.0 CD-writer not burning CDs at the specified speed?
Most USB CD writers today are USB 2.0-compatible for faster data recording. However, if your motherboard is older than April 2000, then it will not support USB 2.0. In such cases, you need to buy a separate PCI-based USB 2.0 card. USB 2.0 writers do not perform well on USB 1.1. For example, an Iomega 24x CD-Writer will burn CDs only at 6x if used on an older USB 1.1 port.