Lumia 950 and 950 XL support USB peripherals
USB OTG and accessories can be connected to the phone
With Windows 10 Mobile and the Lumia 950 range, Microsoft is finally allowing customers to attach and use peripherals with the phone. All you need is a cheap ‘USB Type-C to USB 3.0/OTG’ adapter you can buy from Amazon for about $10.
Of course, if you are planning to buy the Display Dock for Continuum (for $99) you won’t need a cable, as the Dock has its own ports for accessories. Using the Microsoft Display Dock, you can unleash the full power of the smartphone and use the Lumia 950 /950 XL like a PC for universal apps on a bigger screen.
So, you could use external storage, flash drives, card readers, mice, keyboard, and a variety of accessories such as microphones, with the new Lumia 950 or Lumia 950 XL smartphones.