Today in iLounge Deals we’re offering the Premium Aluminum 4-Port USB Clamp Hub for only $19.99 – almost 30% off the normal price. Designed to fit right in with your Mac aesthetic, this hub lets you clamp four additional USB 3.0 ports right onto the bottom of your iMac, making them easily accessible right from in front of your screen. The hub is finished in an attractive brushed aluminum, with rubber padding on the clamp to protect from scratching…