These are not available! I searched on-line and have decided to cobble up my own from a micro switch and cut a Logitech wireless mouse usb cable and solder it in allowing switching of the red (power cable).
I could sure use an on/off power switch in the USB lights I just purchased but it looks like they're still not available. I can find one with micro USB connectors (male to male) but I need a male to female type A connector on either end. I guess I'll have to go another route.