The device itself is made of plastic, but does not look cheap, the connectors are a little deeper and engage good, even if you can wiggle the cord a bit, but this is in my laptop as well.
The USB ports are marked with USB 1 USB 7 and as soon as something is plugged into the USB port jeweilligen, lit a blue diode.
Plug and Play is working properly, I attached the device and it was immediately accepted by my Toshiba laptop.
my disks were detected immediately and very quickly.
Even my cell phone was recognized without problems and it is also charged via the USB interface.
All USB 2.0 devices, including two different cell phones and even my USB 3.0 devices are detected without any problems.
The transmission speed is decent and at the USB 3.0 devices of course correct quickly.
Warm or hot the device was not with me, I have but so far only a maximum of one hour a day of continuous use.
So far, all is well, you should go or change something breaks, I update the assessment.
Conclusion:
A simple box that quickly and easily creates 7 additional USB ports and even USB 3.0.unterstützt.
Plug and Play functions, making operation very easy.
An instruction is therefore not required, but it would still be nice if one would be accompanied.