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Currently manufactured stationary PCs and laptops are usually equipped with at least 2 USB A-type ports. Thanks to this, we can connect various external devices to the computer, such as a mouse, keyboard, flash disk, MP3 player, MIDI-to-USB interface, mobile phone and many more. The problem appears when we want to connect many devices to the computer at the same time - then there are no free USB connectors. In such a situation, for example, we must stop charging the battery in our portable MP3 player to be able to use the wireless mouse. However, there is a simple solution to this problem, which is to connect a USB hub to the computer. Thanks to this device, the problems related to the parallel use of several USB devices at the same time disappear. Our offer includes USB hubs diversified in terms of practical additional functions, such as switches for individual USB ports, LED backlight, and micro SD memory card readers. In terms of power supply, the Botland store offers USB hubs powered directly from the computer's USB port, as well as active USB hubs that require an external AC adapter. Unlike passive USB hubs, active USB hubs provide very high power efficiency. The USB hubs available in our offer are compatible with the USB 2.0 and USB 3.0 standards.