The general design of something that sends a gigabit signal over all the unshielded twisted pair already in people's walls was a hard problem. But once it was solved it meant that you could use cheap unshielded cables for SATA too. That lack of shielding seems to seriously freak out all the old-school electrical engineers, who keep predicting doom and gloom for data that goes over them:Now that was funny. Complaining about unshielded SATA while
http://www.ata-atapi.com/sata.htm