This Belkin hub looks very sexy as it is attached to the outside of my iMac's base with double sided tape. This arrangement gives me quick access and the band keeps it in place for connecting things with one hand. Expensive, but the powered hub charges whatever devices I plug into it, namely my phone, iPad, iPod, etc. I kept the power adapter plugged in the entire time. Would recommend if you need extra USB ports or don't have quick access to the iMac's rear USB ports.
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