on Monday announced the PX-716UF, a new external optical drive compatible with the Mac that can write to 8x-rated DVD-R and DVD+R media at up to 16x. The drive can burn dual-layer DVD+R media at up to 4x, and can also burn DVD+RW at 8x, DVD-RW at 4X, CD-R at 48x and CD-RW at 24x. It comes with USB 2.0 and FireWire interfaces and features an 8MB buffer and features Buffer Underrun Proof Technology. It also comes with Roxio Toast Lite versions 5 and 6. The PX-716UF costs US$239. Plextor’s Web site hadn’t been updated with information on the new drive as MacCentral posted this article.