My brother essentially wants one for his new RT 8.1 tablet. I have an Android version as I didn't go with a Surface device and he's got little access to the internet whereas I can, if possible, use my laptop and download an app from the Windows Store- I would just need to know how to save an installer. I've got a USB broadband modem, not a Wi-fi device.

So does anyone know of one, or have any experience using them for Windows RT?