You won’t have to hunt for a vacant AC wall socket when you want to charge your USB-chargeable devices with these high-powered USB charging hubs from VisionTek. The VisionTek High Power USB Four Port Charging Hub (center) has three 5V/1A ports and one 5V/2.1A port, so you can charge a tablet and three other devices simultaneously. It’s $19.99. The VisionTek High Power USB Seven Port Charging Hub (right) has four 5V/1A and three 5V/2.4A ports, so it’s great for families with lots of USB-chargeable or -powered devices. It’s $49.99. No computer connection is required for either of these devices. The VisionTek Charge & Sync USB 3.0 Seven Port Hub connects to your PC or Mac and to the AC wall socket, so you can sync and charge devices with the four USB 3.0 ports with 5Gb/s (600MB/s) SuperSpeed data transfer connectivity and 900mA bus power it adds to computers with limited USB ports. It also has two two 1 amp ports and one 2 amp port that are for charging only. You can also use this unit as a charging station only when you plug it into the wall outlet only. It’s $54.99. Learn more about these devices and purchase them at VisionTek.