what is usb hub

usb hub is a device that can expand one USB interface into multiple interfaces and enable these interfaces to be used at the same time; USB HUB can be divided into "USB2.0 HUB" and "USB3. 0 HUB" and "USB3.1 HUB".

#The operating environment of this tutorial: Windows 7 system, Dell G3 computer.

What is a usb hub?

USB Hub refers to a device that can expand one USB interface into multiple USB interfaces and enable these interfaces to be used at the same time. USB HUB can be divided into USB2.0 HUB, USB3.0 HUB and USB3.1 HUB according to the USB protocol it belongs to.

Construction

First of all, this word is divided into two parts: USB and hub

First, USB is the English Universal The abbreviation of SerialBus, Chinese is "Universal Serial Bus", also known as Universal Serial Interface.

Second, Hub is what everyone often calls a hub. It uses a star topology to connect multiple USB interface devices.

USB Hub, can be connected to computer desk lamp, computer fan, MP3, U disk, voice recorder, digital camera, etc.

* One USB interface can be expanded into multiple independently working USB interfaces .

* Uses the second generation USB HUB controller

* Directly connected to the computer, no external power supply required, simple and easy to use

* The computer automatically recognizes and installs, no driver is required. Plug and play, easy to plug and unplug

* Support USB2.0, speed up to 480Mbps, backward compatible with USB1.1

* Built-in current overload short circuit protection device

* System support: Win95/98/Me/2000/XP, Linux2.4andMac os8.5 or above version

##Usage

1. USB-HUB is a device that provides extended communication. Whether the Hub can drive a 2.5-inch mobile hard drive when not connected to an external power supply mainly depends on the power supply capability of the computer expansion port!

2. Generally, a 2.5-inch mobile hard drive needs to be powered by a computer or Hub, while a 3.5-inch mobile hard drive needs a high-power dedicated power supply; please do not connect this type of equipment directly;

3 . Without external power supply: The current provided by a computer USB port is about 500MA, which is barely enough for a 2.5-inch mobile hard drive. If part of it is consumed through the USB-Hub, it is not enough for an ordinary 2.5-inch mobile hard drive. .

4. The front USB port of many compatible computer cases has an extra connection, coupled with material problems such as wires, the power supply capacity is even worse; it is very easy to cause the mobile hard disk to become unusable or even lose data. Damage the hard disk;

5. If your mobile hard disk makes a "click" sound, it is caused by insufficient power supply. For your mobile hard disk, it is recommended to connect the USB-Hub to the motherboard on the back of the chassis. Integrated USB port to ensure better contact and power supply

6. When using a mobile hard disk, please use the original USB power supply cable. Ordinary USB cables have thin wire diameters and high losses, and cannot meet the power supply needs!

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