Can anyone tell me if there is a USB-A connector on the transmitter, or a USB-C?! I haven't found this anywhere in the specs. Not even from the manufacturer. But according to the PDF document, I have to assume it's USB-A. But I would like to be sure before I order. PS @ Digitec-Galaxus: Why do you do limited quantity promotions (10/25) when you don't have that many in stock?!