I have nothing against instructors using the name of a military unit to sell either their own hand-to-hand combat system or one that is used effectively by that unit. Not at all. For the most part, I see this as a marketing thing and each instructor/author has to make decisions on that front.
If you want to connect a USB device to an HDMI device then you must use a converter box. This is a set of electronics that change the protocols and signals. The only adaptor which works is the DVI-HDMI ones.
How USB Ports Work. The rectangular socket is a typical USB socket. Connecting a USB device to a computer is simple -- you find the USB connector on the back of your machine and plug the USB connector into it. If it's a new device, the operating system auto-detects it and asks for the driver disk.