What is usb a?

USB type A is the most commonly used USB connector type. It was introduced in 1996 alongside the USB 1.0 standard. The USB type A connector is a flat rectangular shape with a trapezoid-shaped face. It has four contacts that allow it to transfer data and power to and from a device. USB type A ports are typically found on computers, laptops, and other electronic devices. It is widely used for connecting USB flash drives, external hard drives, printers, scanners, cameras, and other peripherals to a computer. USB type A is capable of providing up to 5V DC of power at a maximum current of 0.9A. It has faster data transfer speeds compared to its predecessors with transfer rates of up to 5Gbps using USB 3.0.