Logitech G510s User Manual - Page 24

I'm having problems with my device's USB ports

Page 24 highlights

I'm having problems with my device's USB ports If your device's hub is self-powered then make sure that your devices don't require a combined total of more than 100mA. Examples of devices that do not work when plugged directly into a self-powered USB hub include some video cameras, scanners, floppy disk drives, and gamepads that support rumble/vibration effects. Refer to your device's documentation to find out its power requirements. If you have two devices plugged in, try unplugging one of them and seeing if the other then works. Make sure that the device is correctly plugged into one of your device's USB ports, by unplugging it and then plugging it in again. Try plugging the device into your device's other USB port. Note: If your device doesn't have integrated USB ports, ignore this topic.

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I'm having problems with my device's USB ports
If your device's hub is self-powered then make sure that your devices don't require a combined total of more than 100mA.
Examples of devices that do not work when plugged directly into a self-powered USB hub include some video cameras,
scanners, floppy disk drives, and gamepads that support rumble/vibration effects. Refer to your device's documentation to
find out its power requirements.
If you have two devices plugged in, try unplugging one of them and seeing if the other then works.
Make sure that the device is correctly plugged into one of your device's USB ports, by unplugging it and then plugging it in
again.
Try plugging the device into your device's other USB port.
Note:
If your device doesn't have integrated USB ports, ignore this topic.