I'd like to know if the ports that are toggled on stay on if you cut and restore power to the entire hub? Critical for my potential use, but unclear.

They are mechinical push buttons which retain their state regardless of power.

No mention of circuit or voltage or surge protection in the product ad, is this correct?

Do not believe it has surge protection. Puts out standard usb voltage - about 5 volts. Works great. You can turn each port on or off individually.

How can 15 watt power supply be enough power for 10 USB ports when each port requires about 5 watts each?

Standard USB power is output at 5v (0.5A) not 5w, at this range the high average for the ports would be 2.5 Watts +-. But it is also not meant to have all ten running at once, hence the on/off buttons. and only 1 is meant for charging even though the other can and will charge.

Why do all powered USB hubs insist on useless power switches and sleep disrupting lights?

I found the separate power switches to be very useful as I can load the hub with peripherals and turn on only the ones I need at any one time. The lights allow me to know when something is operational and I have made it a habit to turn them off when I close down for the night. If these aspects bother you, why not turn all switches on and cover them with a cloth and secure it with tape or other material? Then all are hot and dark. Of course you may have to unplug some peripherals if they draw too much power instead of just turning them off.

ASIN	B0BH252R3J
Best Sellers Rank	#41 in USB Hubs
Customer Reviews	4.5 4.5 out of 5 stars (4,201)
Date First Available	October 2, 2022
Item Weight	14.8 ounces
Item model number	KDP-AF120300U
Manufacturer	WENTER
Package Dimensions	9.57 x 3.94 x 1.93 inches

Powered USB Hub 3.0, Wenter 11-Port USB Splitter Hub (10 Faster Data Transfer Ports+ 1 Smart Charging Port) with Individual LED On/Off Switches, USB Hub 3.0 Powered with Power Adapter for Mac, PC

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