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A little more won't likely present a problem, espcially since you're not going to draw a lot of current from the hub (no charging, as you said). The hub will have its own voltage regulator on board if it's running off 12 V, so the actual supply may not need to be perfectly 12 V. If the devices you’re plugging into your computer have their own AC adapters, using an unpowered USB hub should be fine. Re: powering usb hub at 12V from car battery. The Advent HB112 hub has a lightweight and portable design, so you can. Simply connect the hub to a USB 2.0 port in your computing device and you instantly have more USB ports for connecting additional external hardware to your PC. Using an unpowered hub with a high-voltage device means you’re drawing power away from the computer itself, which can cause it to underperform. Convert one USB connection into four with the Advent HB112 4-port USB 2.0 Hub. As computer USB ports produce small amounts of current, they are best used to power devices that need only low voltages, such as:
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Unpowered hubs draw power from the USB port they’re plugged into.
#Wiring a multi port usb hub to a car battery full#
So, not only can it run more devices than an unpowered hub, it can do so at full power, without any drops in performance. devices that operate on higher voltages, such as:Īs this guide explains, electrical devices vary in the amount of power they need to run or charge.īecause a powered hub uses mains power, it can give every device connected to it the maximum voltage that USB allows.You’d use a powered USB hub if you needed to run: This short guide explains the difference, to help you understand which one you need. Some USB hubs are powered, others are unpowered. It plugs into your computer and lets you connect more devices than your existing USB ports allow. A USB hub is like an extension lead for USB devices.