USB Port

     USB port ( Universal Serial Bus ) is the most used connection point for data transfer in the world. It was created in the mid-1990s with the intention of replacing all other PC ports like serial port , parallel port , PS/2 port .  A standard usb connector is a simple socket with 4 pins : one for power, one for ground and two for data transfer.

USB Port

USB Symbol

USB Symbol

    In 1996 USB 1 was released. It had a speed range between 1.5 Mb/s and 12 Mb/s. Four years later USB 2.0 port was released and had a maximum speed of 480 Mb/s. The usb 2.0 brought with it new devices like usb flash drive or memory stick , usb hard drive , usb camera  and many other.

Recent development in storage devices increase the need for higher transfer speeds and in 2008 USB 3.0 was release. This technology can reach speeds of 5 Gb/s which is 10 times faster than USB 2.0 .

A usb port can be connected with almost all other port type like Ethernet port or firewire port by using a usb adapter. The usb adapter can be a circuit in a box with an usb port ant one end and a compatible port at the other or a simple usb cable.

The most frequent usb port problems are :

1.      What usb port driver to use ?

If you are installing a new hard drive that need a usb driver and you don’t have it all you have to do is do connect the device to the pc or laptop, go to device manager, right click on the device that has the question mark in from , click properties , device ID , copy the ID and give it a quick search on the internet. Most of this drivers are free but for some you will have to pay.

2.      USB port not working

This problem can have multiple causes and solutions. You can try to uninstall the usb controller and then reinstall it; restart your computer; if your usb ports are not built directly in the motherboard check to see if the usb card is properly connected; if you installed a new hard drive unplug it from the usb port and then check the port functionality.

 

USB Pinout

Pin 1 – VCC +5V

Pin 2 – Data –

Pin 3 – Data +

Pin 4 – GND

USB Pinout