USB3.0HUB

The USB3.0 HUB is also known as a USB3.0 splitter or hub. It is an external device based on the USB3.0 standard, which can expand a single USB interface into multiple independent interfaces and support the parallel use of multiple devices. Its theoretical transmission rate can reach 5 Gbps (approximately 640 MB/s), which is 10 times higher than that of USB2.0. It features full-duplex communication and enhanced power supply capabilities, and is backward compatible with USB2.0 devices.

This device adopts a dual-interface physical design. The interfaces are usually marked in blue and are equipped with a built-in main control chip to achieve bandwidth allocation and power management. The actual transmission speed is limited by the storage medium. For example, when a mechanical hard drive is transmitted through the USB 3.0 interface, the actual speed is usually in the range of 100-200 MB/s. It is necessary to pair with a solid-state drive to approach the theoretical performance. Some products adopt a vertical interface design to optimize the insertion and removal experience. Some models support concurrent transmission of multiple interfaces, but hosts without the native USB3.0 interface need to be expanded through a conversion card.

However, it should be noted that these are theoretical transmission values. If several devices share a single USB channel, the main control chip will allocate and control the available bandwidth for each device. For example, in USB 1.1, all devices can only share a bandwidth of 1.5MB/s. If a single device occupies all the bandwidth of the USB interface, it will cause difficulties for the use of other devices. The maximum transmission rate of USB 3.0 is 5GB per second, which is 10 times faster than USB 2.0. The USB 3.0 splitter is a device that can convert one USB interface into multiple (usually 4), and enables these interfaces to be used simultaneously. Moreover, its speed is 10 times faster than the USB 2.0 splitter.