Any user account can be used to complete this procedure. However, only members of the Administrators group can make changes to any of the devices or their drivers.
View the power allocations for a USB hub Hubs for USB devices are self-powered or bus-powered. A self-powered hub has its own power supply and provides maximum power to the device. A bus-powered hub draws its power from the USB to which it is connected and provides minimum power. Devices requiring a lot of power, such as cameras, should be plugged into self-powered hubs.
You can check the power allocations for a USB hub to detect situations in which too many devices are using the hub.
To view the power allocations for a USB hubOpen Device Manager. Double-click Universal serial bus controllers. Right-click USB Root Hub (you might have multiple instances), and then click Properties. On the Power tab, view the power required by each device in the Attached devices list.
Note Universal serial bus controller only appears if you have a USB port on your computer.
The Power tab only appears for USB hubs.
View the bandwidth allocations for a USB host controller You can view bandwidth only for a universal serial bus (USB) controller. Some USB devices (for example, modems) might not appear because they do not report bandwidth requirements to the operating system.
Each USB controller has a fixed amount of bandwidth that all attached devices must share. If you suspect a bandwidth shortage for a USB controller, you can confirm this by viewing the bandwidth allocations currently being used by each device.
To view bandwidth allocations for a USB host controllerOpen Device Manager. Double-click Universal serial bus controllers. Right-click [NameBrand] Host Controller for your system, and then click Properties. On the Advanced tab, in the Bandwidth-consuming devices list, view the bandwidth used by each device.
sabalo
1 Message
0
May 8th, 2017 21:00
I don't have the answer to that but I have no usb power in sleep mode. Any suggestions?
DELL-Jesse L
Moderator
•
17.9K Posts
0
May 9th, 2017 07:00
JGSpitfire,
Any user account can be used to complete this procedure. However, only members of the Administrators group can make changes to any of the devices or their drivers.
View the power allocations for a USB hub
Hubs for USB devices are self-powered or bus-powered. A self-powered hub has its own power supply and provides maximum power to the device. A bus-powered hub draws its power from the USB to which it is connected and provides minimum power. Devices requiring a lot of power, such as cameras, should be plugged into self-powered hubs.
You can check the power allocations for a USB hub to detect situations in which too many devices are using the hub.
To view the power allocations for a USB hubOpen Device Manager.
Double-click Universal serial bus controllers.
Right-click USB Root Hub (you might have multiple instances), and then click Properties.
On the Power tab, view the power required by each device in the Attached devices list.
Note
Universal serial bus controller only appears if you have a USB port on your computer.
The Power tab only appears for USB hubs.
View the bandwidth allocations for a USB host controller
You can view bandwidth only for a universal serial bus (USB) controller. Some USB devices (for example, modems) might not appear because they do not report bandwidth requirements to the operating system.
Each USB controller has a fixed amount of bandwidth that all attached devices must share. If you suspect a bandwidth shortage for a USB controller, you can confirm this by viewing the bandwidth allocations currently being used by each device.
To view bandwidth allocations for a USB host controllerOpen Device Manager.
Double-click Universal serial bus controllers.
Right-click [NameBrand] Host Controller for your system, and then click Properties.
On the Advanced tab, in the Bandwidth-consuming devices list, view the bandwidth used by each device.
Brad L (retired)
9 Legend
•
2.7K Posts
0
May 9th, 2017 09:00
Hi Sabalo,
Can you post what model/OS you're using?
Best regards,
Brad
JGSpitfire
2 Posts
0
May 9th, 2017 09:00
Hi, i dont see the power tab, in my desk computer with windows 7 it appears but here in my laptop with windows 10 there is no power tab