How much do you know about hubs?

Teach you how to choose a USB HUB!

USB hubs, which we often call USB HUBs, can extend the USB port of a computer with multiple USB ports, solving the problem of not having enough USB ports on a user's computer and facilitating the use of plug and play interfaces.

How to measure the standard of a good HUB? The word "good" includes multiple layers of meaning, and a good USB HUB is a product that requires comprehensive evaluation from quality, ease of use, brand,and moderate price.

With the comprehensive experience of our friends in buying hubs, today we will talk about what features are required for a qualified USB HUB to have basic qualities?

I. Number of interfaces

At present, 4-port USB HUBs are widely used, and there are also 7-port and as many as a dozen-port HUBs. Of course, such HUBs are mainly used for those work scenarios that require comparative verification and batch processing. It is worth mentioning that multi-interface USB HUBs generally come with power supply, which has obvious advantages in terms of power supply and can drive more devices with high power supply requirements.

2.External power supply

First of all, it is important to understand this attempt. A USB interface can provide 500mA of current, and a HUB without external power supply can only do distribution from the limited 500mA current to each expansion interface. The HUB with external power supply does not have this limitation and can provide sufficient power to each interface according to the active situation, which is very helpful for USB mobile hard disk and other devices with high power supply requirements.

You should know that insufficient power supply will lead to bring the device can not read the data, serious points will lead to data recording errors hard disk damage, scrap and other conditions.

3.The transmission speed

Hub transmission speed problem is not absolute, in addition to theoretical values, line length, power supply conditions and compatibility between USB will also affect the transmission signal problem. USB2.0 theoretical maximum transmission speed of 480Mbps, while the theoretical speed of USB3.0 up to 5Gbps, in layman's terms is USB3.0 than USB2.0 charging / transmission speed of nearly ten times faster.

Nevertheless if you use a 2.0 USB flash drive, then you are connected to the USB 3.0 interface can only reach 2.0 transfer speed, the version of the USB flash drive has been limited.

4.A reasonable interface layout

Excellent USB HUBs are designed to be user-friendly and will take into account all aspects of the user. For example, the location of the USB HUB providing the expansion interface is important. A poorly positioned USB port can obscure other USB devices once the device is inserted, causing the interface to be wasted.

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