Different usb connectors. from left to right:
Male Micro USB B-Type, male Mini USB (8-pin) B-Type, male Mini USB (5-pin) B-type, female A-type, male A-type, male B-type. Shown with a centimeter ruler. Female A-type connector (4th from left) is "upside down" to show the pins.
This cable is USB A Male to Micro-USB B Male.