Good question. I just grabbed my LG Slim DVD R/W and plugged it in with a video disk in it and nothing. I used two different file managers and neither would mount the drive. If anyone has been able to do this let us know and how you managed it.
Sorry no recommendations, I havent looked to buy one...I mean all optical drives should be PNP devices but if I was going to buy one for this tablet, I'd buy one that was tested and says compatible with Linux on the box or description.