the stage or period of greatest vigor, strength, success, etc.; prime: the heyday of the vaudeville stars. 2. Archaic. high spirits. Origin of heyday1.
A USB flash drive, also variously known as a USB drive, USB stick, thumb drive, pen drive, jump drive, flash-drive or USB memory, is a data storage device that includes flash memory with an integrated USB interface. USB flash drives are typically removable and rewritable, and physically much smaller than an optical disc.
USB Host Controller. A USB Host Controller is the hardware either on the computer motherboard or PCI card. It provides an interface for transferring streams of data between the host computer and the USB devices. The host computer may have one or multiple USB host controllers with different types of interface. USB Host Controller Interface