Your device is "5V 2.1A" as jacks specification, the description on Amazon and some reviewers but say something about "2.4A". The device is available with 31W = (2 * 2 * + 2.1A 1.0A). When loading a EasyAcc Powerbank my USB measuring device says that the sockets differ only by nuances in the output voltage and the charge current. The two middle sockets were the strongest and provided 5,07V and 0,81A. The 7-port charger MyBolse yielded only 4,89V and to 0.4A. These values and the shorter charge time associated speak clearly for AVANTEK.
The rest are minor: the device measures 8,8x8,8x3,4 cm, weighs 171 g without cable and has two large non-slip rubber feet. The housing is made of hard plastic matt black. It's easy to clean and resistant to greasy fingers. The LED indicates only operational readiness. Control LEDs for each socket there is not. Most devices show anyway to themselves that they are being downloaded.
The two-wire connection cable is with 1.5m usually long enough - but as always much too stiff. Softer strand suggests naturally immediately on the price by, well why scrimp all manufacturers. After all, hardly verlierbares a Velcro tape is attached to fix the wound cable. This cable should be removed from the offer. Then you had the choice, no cables to buy as a customer - or one that meets your requirements. Currently you get delivered the cheap scrap metal which stacks up with me too towers - and everything never used because too stiff.
Conclusion:
Besides - as always - way too stiff cable I have nothing to complain about so 5 Stars!
PS: If you are "not helpful" find this review, please familiarize yourself the trouble and leave a comment rather than a dull, meaningless "Abklick" put!