This caused the I/O interface to my computer to disengage more than once with little more than a slight movement of the USB cable. I had problems with my adapter, which had a loose connection to the drive's SATA interface. On the other hand, the desktop model has two Thunderbolt ports, so it can be used as a 'pass-through' device. Unfortunately, if you have other Thunderbolt-enabled devices, Seagate's Backup Plus portable model will have to be at the end of the chain - it's got no Thunderbolt output port.
One of the nice features of Thunderbolt is the ability to daisy chain up to five devices. The Seagate Backup Plus portable drive with the Universal Storage Module interface adapter removed. The FireWire adapter for the Backup Plus won't be available until the fall, but you can still use the GoFlex model of the adapter with this drive it just won't match new drive's look. The Thunderbolt adapter will run you $99. The drive comes standard with a USB 3.0 adapter snapped in, but that can be removed with a quick tug and replaced with a FireWire 800 or Thunderbolt adapter - if you're willing to part with some additional greenbacks. Like its predecessor, the GoFlex, the Backup Plus portable line comes with a Universal Storage Module - a removable SATA interface adapter.
