Gateway NV51B User Manual page 26

Universal Serial Bus (USB)
The USB port is a high-speed serial bus which allows you to connect
USB peripherals without taking up system resources.
Certain computers may include one or more USB 3.0 ports. These
resemble standard USB ports, except they include additional internal
connections and are blue. You may use USB 3.0 compatible devices
with these ports to benefit from faster transfer speeds.
26