Sony will ship a Mac-compatible double-layer DVD burner in December.

The DRX-710UL-T external DVD burner supports both FireWire 400 and USB 2.0. It ships with Roxio Toast 6 Lite.

Double-layer support means users can burn up to 8.5GB of data on a single DVD+R DL disc.

It supports 2.4x DVD+R DL, 16x DVD+R, 8x DVD-R, 4x DVD+/-RW, 48x CD-R and 24x CD-RW recording speeds. Though Apple's iDVD software doesn't support such external devices, DVD Studio Pro does.

Sony will charge $230 for the product.