USB Hub 4 Port ON-OFF USB 2.0 Similar with Quirkys Contort, this is also a power strip styled USB hub that measures approx 105 x 36 x 22mm, and weights 60g. As we can see from the images, each USB 2.0 port comes with a matching power switch and a blue LED light. This means you can temporarily suspend your USB flash drive or other USB gadgets without having to pull them out from the USB ports. Apart from that, the USB hub is compatible with various operating systems including Windows 7, Vista, XP, 2000 and Mac OS, and supports plug & play and hot swappable capability.