Can it be used only with the pc usb? or always need to be connected to the electrical outlet?

It depends on what type of USB port your laptop has (this dictates the maximum power transmission capacity) and how much demand you're placing on the device. If it's a bunch of small things like BT dongles and small flash USB/SD drives, it may power them all. If you use an external HDD or SSD (some are built to be that from the start, the rest can be converted to one via a USB enclosure), especially the 3.5 inch varieties which standard desktop towers use, you are far more likely to have power shortages. For example, my SSD/HDDs will beep when attached to a hub and cannot be loaded by the PC, if I use two at a time and I don't attach some sort of external power source (or I don't use one high enough). Also, bear in mind each USB port in a hub has a maximum power transmission rate. Thus, if you use a device that consumes far less power than the listed combined max rate/power jack intake for the hub, but consumes more than what an individual port of that hub can provide, it will not work properly. This shouldn't be a concern unless you use a very high-power or high-end device. For reference, an external 2.5-inch USB external hard drive uses 0.5 amperes (also listed as 500 mAh). The standard 2.0 USB A-type ports supply at least 0.5 A.

This product is described as a splitter where I've seen other defined as a hub. Is there a difference?

The Marketing department that wrote this copy/description is applying what the know about video to USB. This is a Hub. It has nothing to do with splitting a signal (as a video signal analogy would suggest) The tech folks at Atolla should have caught this error in the description - since it confuses people.

Does it work if the power adapter is not plugged into the wall?

Sort of is the correct answer. For one or two usb lol items it should. But you can’t split that much or use the charging port with being plugged in. This goes for all these, including HDMI. If it doesn’t use power it will never work as intended.

Why is my Daughter complaining that her phone stops charging overnight

Ensure you use the included power adapter and plug this into a power outlet. Next, make sure your daughter's phone charger is plugged into the charging port at the bottom/only port with no light or button. Or alternatively, purchase a "USB power adapter" which does not need to be plugged into a computer to function. Good luck!

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🔗 Power Up Your Productivity with 7 Ports of Pure Speed!

CONTROL YOUR WORKSPACE - Individual on/off switches let you manage devices without unplugging—streamline your desk.
PLUG PLAY NO HASSLE - Seamless compatibility with Mac, Windows, Linux—hot swap devices without missing a beat.
CHARGE SMARTER NOT SLOWER - Dedicated 2.4A charging port powers your iPhone/iPad faster and safer with 5V/4A adapter.
BUILT TO LAST BACKED TO TRUST - Compact, lightweight design with an 18-month warranty—reliable power for your tech arsenal.
EXPAND INSTANTLY SYNC SUPER FAST - Turn 1 USB port into 7 blazing 5Gbps data channels—perfect for multitasking pros.

The Atolla 7-Port USB 3.0 Powered Hub expands a single USB port into seven high-speed 5Gbps data connections, featuring a dedicated 2.4A smart charging port and individual on/off switches for each port. Compatible across major OS platforms and backed by an 18-month warranty, it’s the ultimate desk essential for MacBook and professional setups.

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Brand	atolla
Manufacturer	bauihr
Model	CH-207U3
Product Dimensions	16 x 4.5 x 2.3 cm; 325 g
Item model number	CH-207U3
Operating System	Mac OS
Hardware Interface	USB
Compatible Devices	Tablets
Special Features	Powered
Voltage	5 Volts
Batteries Included	No
Batteries Required	No
Data Transfer Rate	5 Gigabits Per Second
Number of Ports	7
Total USB ports	7
Connector Type	USB
Material	Plastic
Manufacturer	bauihr
Item Weight	325 g

Powered USB Hub 3.0, Atolla 7-Port USB Data Hub Splitter with One Smart Charging Port and Individual On/Off Switches and 5V/4A Power Adapter USB Extension for MacBook, Mac Pro/Mini and More.

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