I bought this one and it works great and it is tiny: Amazon.com: HooToo® HT-UH005 USB 3.0 4-Port Hub Ultra-Slim (5V/2A Power Adapter, Latest VIA VL812-B2 Chipset & 9081 Firmware, 2.3 feet USB 3.0 Cable, Free Magic Velcro Stickers), Backward Compatible with USB 2.0 and Supporting Windows / Mac /...