Good HUB without power supply.
Good item, solid and practical. The power supply, which is not strictly mandatory, must be done by the buyer himself. Given the price of this hub, a small transformer should have been included. It should be noted that many USB devices take power via the USB socket. It is therefore strongly advised to make the required source, by attaching a cable to the appropriate plug supplied with the hub, correctly and with the correct polarity. I'm taking off one star considering that this item should have been delivered ready to use, i.e. with its power supply supplied.
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