I find it odd that it would be a power supply problem. I have a ANTEC true power 430 ps that houses 2 hard drives, a Plextor 708a dvdrw, Toshiba 1612 dvdrom, Benq 1620 dvdrw & a Liteon 811 dvdrw. I also have a ANTEC true power 480 that houses 2 SATA hard drives, 1 IDE 200 gb hard drive in a hard drive rack enclosure, Pioneer 107d dvdrw, Toshiba 1612 dvdrom & Benq 1620 dvdrow. The power connectors are shared, the 1620's are not on it's own power connector. I have no problems in reading/burning with the 1620's.