is now rapidly popularizing high-speed USB and lightning interfaces, which is definitely good news for friends. Small chassis, all-in-one machines, and notebooks with insufficient interfaces have greatly enhanced the connection capability, of course, the premise is to use a reliable extension Hub. There are many types of USB and lightning expansion hubs now, and it is not a big problem to meet everyone's requirements, but there are actually some tricks when purchasing and using them. Let's talk about it today. The speed of the
extension interface is definitely what my friends care about the most. Some people may be attracted by the saying "USB 3.2" Hub. Here we need to explain that these Hubs can actually only connect to the USB 3.2 interface on the computer, and this speed must be allocated to the devices on the entire Hub, so the speed of a single device may be much lower. In addition, USB 3.2 is also divided into Gen1 (5Gbps), Gen2 (10Gbps), and Gen2×2 (20Gbps). You must confirm it during procurement.
Procurement Type-C Hub also needs to be noted that there is really little interface space on mini PCs, all-in-one machines, and laptops. Some Type-C has other tasks, such as charging, video output, wired network, etc. If you need to expand these interfaces, you must use a multi-function Hub, otherwise a lot of functions will be wasted, and the experience will be reduced.
Another major advantage of high-standard USB and lightning interface is its strong power supply capacity, but the current of the computer interface must also be distributed to multiple USB interfaces on the Hub at the same time. Therefore, it is not surprising that when multiple large-capacity mobile hard disks are connected to the same time, it is not surprising that the power supply is insufficient or the charging of the mobile phone tablet is too slow. If you really need this, please buy a Hub with an external power supply. It is best to choose a model with a dedicated high-power charging interface.
Careful friends will find that the number of USB Hub interfaces on the market is usually 4 or 7. 4 interfaces are easy to understand, but why is there a number of interfaces like 7 given? This is because during the second allocation, "Bridge Chip 2" will split one of the USB channels under "Bridge Chip 1" into 4, and add the 3 that have not been split, forming 7 interfaces. There is another feature on Hubs like
, that is, high and low speed interfaces. For bridge chips that only evenly distribute, the bandwidth of the remaining 3 interfaces allocated at one time is obviously different from the 4 interfaces allocated at a time. Even if the bridge chip can intelligently allocate bandwidth to each interface, the secondary allocation of interfaces will cause greater latency and bandwidth loss due to more levels.
Some friends will find that when plugging and unplugging the keyboard and mouse on the USB Hub, it often causes the USB disk on the Hub to read and write for a few seconds, and may even fail. This is because all USB Hub devices are connected to a USB interface on the computer, and are handled by a USB enumeration thread. When it handles plug-in and unplugged new devices, all USB devices connected to the Hub will be suspended. Therefore, when reading and writing important data, do not plug and unplug other devices on the Hub.
