USB 3.0 Ultra Slim 4 Port Hub - Type A to 1 USB 3.0 + 3 x
Thunderbolt Slim Hub: Satechi's sleek dock - 9to5Mac
i-tec USB-C Slim 4-Port HUB Without Power Adapter 4x USB 3.0 Port for Windows MacOS Android ChromeOS Thunderbolt 3 Compatible : Amazon.co.uk: Computers & Accessories