“the 4 ports usb works without the power plugged in. so what is the power for ??? Is the 110 power for charging up items ??? the usb ports work even when not plugged into 110 adapter.”
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The power cord can be used always or only when you have a lot of USB devices that draw too much for your computer. Basically if it works OK without the cord then you don't need it. However, if you start having issues then plug in the cord for more power and less drain from your computer.
Sorry, there was a problem. Please try again later.Some larger devices like mechanical hard drives may require more juice.
Sorry, there was a problem. Please try again later.You can also use this hub for charging other USB-enabled devices. The power cord is useful when the computer cannot supply enough power to the hub. Visit this link for more details, http://www.belkin.com/us/F4U040/p/P-F4U040/.
Sorry, there was a problem. Please try again later.It depends on your computer and how power management is set up. For example, Intel Compute stick only has one USB connector and can only power one USB device. To be able to use more than one USB device, you need a hub that has a separate power source.
Sorry, there was a problem. Please try again later.USB's have four or five pins inside that match up. some pins pass power and some pins pass data. without it plugged in it will pass data only. Conversely you can plug it in to the wall only and charge your microusb devices without passing data with the right cord. With both connected you can download pictures off your phone, for example and charge it at the same time.
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