TrustedReviews looked at the Buffalo Technology LinkStation Pro.

The main differences between the two LinkStation families are in the storage department with maximum capacity going through the roof as the top of the range model employs the very latest 750GB SATA hard disks. There are no changes for connectivity as the unit also sports Gigabit Ethernet plus a pair of USB 2.0 ports but has a faster 400MHz Marvel Orion Media Vault processor – the older LinkStations use a 200MHz variety.

Buffalo Technology LinkStation Pro Review