A test of the Lite-on DS-8A1P shows that this drive at least reads CD+G disks just fine. I have not tried writing CD+G tracks, but the specs say it is CD+G compatible. The drive I got was new and was inexpensive.
CD+G is an obsolete format used only for karaoke CDs (the kind that play background music while displaying the lyrics on the screen.) The question comes up in the forums occasionally about what laptop DVD writer will read and write the graphics track of a CD+G, since most of them don’t. For those who want to back up their CD+Gs, note that a compatible drive is only half the story. Most burning programs don’t support CD+Gs, so you have to buy a special burning program that does.