"..The pocket-sized Hewlett-Packard M820e opens the doors to truly portable CD recording. Despite its diminutive size and weight, the drive feels solid and could easily do double duty as both a portable and a desktop recorder. An additional SCSI cable is all you need to attach this recorder to your desktop computer, assuming you already have a SCSI card.
Its 4X write, 4X rewrite, and 20X MAX read specs are as good as it gets on many non-portable CD-R/RW drives, and the M820e performed up to spec in all road tests. It is unlikely that we will see recorders get physically smaller than this, at least in external models. Price: $599.."