Kanex (www.kanexlive.com) has introduced what it says is the world’s first Thunderbolt to eSATA adapter. It lets you connect your Thunderbolt-equipped Mac to an eSATA hard drive.
You can also add an extra USB 3.0 port to your Mac or PC. The US$79.95 Kanex adapter supports both eSATA and USB 3.0 interfaces simultaneously. It’s small and compact enough to take it with you when you’re on the go.