TBreak has posted a review on the Relisys 52X and 56X CD-Rom drives.
Simple and painless. Just open your casing, find an empty 5.25 inch bay, slide the CD ROM in, select Master/Slave, connect IDE, power and Sound cables and you´re all set. Windows 9X/NT/2000 should automatically recognize the drive and a driver is included on a floppy for DOS users (are there still any?)Read more
Once the drive was installed we checked up on the noise levels. The 56X drive was nice and quiet- about as quiet the Creative infra 52X that we recently reviewed which is also the drive we´re gonna be benchmarking these drives against. Surprisingly the 52X was noisier than the 56X and that too by quite a bit.