Given an Amazon customer review, write a title for the review. The preferred titles are under fifteen words.

The late 2010 Mac Pro (5,1) is a fantastic computer with one of the worst Bluetooth antennae ever created. Unless your magic mouse is 6&#34; away from the box, good luck to you.<br /><br />But add one of these puppies to the closer USB port on the back of your cinema display (or anywhere else), and suddenly the mouse tracks like a champ! I wouldn't be surprised if I end up getting longer battery life out of the mouse either since it probably has to broadcast with less power now (if that's even possible -- I don't know enough about Bluetooth).<br /><br />Summary: cheap, NO DRIVERS TO INSTALL, works immediately, easy.<br /><br />-1 star only because it blinks a blue LED @~2Hz constantly. I can't see it at all because it's behind my monitor, but it's definitely something that would annoy some people.<br /><br />Note: there is a newer version of this product: GBU521. I have heard it doesn't play so well with Macs, so I got this older GBU421. No complaints. If you're just trying to fix the problem of poor Bluetooth reception for your mouse, don't risk the newer one. Just get the GBU421 and be happy.
Great for fixing poor Bluetooth reception of late 2010 Mac Pro