I don't think it's going to be very likely to find one that could connect to a desktop internal CDR drive and still use USB power. My Toshiba drive's specification lists it as needing 760mA on the 5V line when burning. It also needs 12V to power it's mechanism. USB can only supply 500mA per port so you'll exceed it on the drive alone.

No idea how much power a firewire port can supply. From what I've seen, external CDR drives all need you to drag a wall wart along with you.