Meet the BoltHub: a low-profile USB-C hub for iPad Pro that lets you simultaneously connect USB-C, USB-A, HDMI, microSD, SD and 3.5mm audio while keeping your tablet charged. It can be securely attached with its L-shaped holder against the corner of your iPad Pro.
BoltHub is compatible with other tablets too. Thanks to it, you will be able to attach keyboards, displays, headphones, cameras, and other devices to your tablet. It is expected to ship in July. You can find out more about it here.