What is a universal serial bus header?

What is a universal serial bus header? usb a slot Home Products tagged “2 usb slot car charger” Filters Price ₹ - ₹; ₹ - ₹; ₹ - ₹; ₹ + Clear Show Results usb 3 slot 4 Port USB A Female Slot Plate Adapter - USB panel - 4 pin USB Type A

usb 3 slot LG Lcd has a usb slot but when I insert any device like pendrive with images or videos or connect didicam with it it does not work

usb 20 slot Most electronic devices have a port, , where a USB cable gets plugged That “place” or slot is called the port As you can guess, this port Use the SD card slot with SD, SDHC, SDXC USB ports are sometimes known by the USB specification of the port, such as USB 2 or USB 3