Yup... what web said.
Ya threw me off the scent when you said PS2... that's a connection for a keyboard or mouse. eSata would be as fast as if the drive was in your 'puter. A few motherboards will have that eSata connection. But if you wanted, I think you can get a eSata to Sata cable and plug it right into your MB.. just route it back out the back somewhere and hook up the drive. Powered down, of course.