These cables are USB-C (i.e. 3.1) to work with the contemporary Android phones and other USB-C devices described on this site.
Sinywon Flexible Mini USB LED Light (3-pack)
Can’t see your keyboard in the dark but also don’t want to shell out for a backlit keyboard or new laptop with a backlit keyboard? Try this inexpensive solution. It uses very low power, so any USB port should work just fine. Comes in a handy 3-pack so you can give your friends one, too!