Great little connector. I needed a couple of USB extension cables at my desktop computers. Nothing is more frustrating than to have to get down on your knees to insert a USB Memory Drive into a USB slot on the back of a desktop. Answer is a USB A Male on one end and USB A Female on the other. They sell cables like that, but I had a bunch of USB Printer cables laying around (Male A - Male B) so this adapter turned the unused printer cable into an extension cable that runs to the top of my desk. I now just reach over and plug the USB drive into the USB A Female end of the connector and I'm off to the races! Saved ordering a separate cable and throwing the printer cable into a landfill.
PROS: Handy for turning regular USB printer cables into extension cables to plug in things like USB memory sticks.