Question about Belkin ExpressBus (F5U021) 4-Port USB Hub

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The hub will power down when the computer is turned off how ever it turns itself back on. how do i prevent this

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The item you have selected appears to be a USB hub, if it is indeed a USB Hub, there is no way to prevent it from being shut-off when you turn off your computer.
the hub is supplied power from your computers USB port, so when you shutdown the computer, your removing power from the hub.

Posted on Jun 14, 2010


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If Matt9711's solution does not work you will need to go in admin mode and turn off the network then go in service mode and reinitialize the network card then power off then on and then back in to admin and turn the network back on.

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Your computer could have suffered a complete power failure.

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2001 YAMAHA VSTAR CLASSIC 650 - dirve shaft turns, but not power to rear wheel. stopped providing power while driving down the freeway

It sounds like something mechanical in the hub of your rear wheel is broken. It will probably be quite expensive to fix. You ought to count yourself pretty lucky since when it broke a shard of gear or something could have lodged itself between the rapidly rotating final drive gears and locked the back wheel. The level of danger involved in that type of failure suggests to me that Yamaha designed the thing with preventing this from happening at the front of their minds

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Yesterday I had put connected the USB charger port to my ipod to charge it. When I did this I seen it said"HUB exceeded limit" or something like that. I also noticed that the internet was off as...

Did you try disconnecting all USB connections from the laptop?
The "HUB exceeded limit" error message is telling you that you have too many things using too much power on your USB connections.

Please disconnect all USB connection, disconnect the power cord, and remove the laptop battery. Next press and hold the power button down for 30 seconds to drain away any residual electrical charge from your system
Install the battery and plug in the power cord again -- do NOT plug in any USB connections at this time.

Try to boot the laptop as normal. If the laptop does not boot as normal now, then you will need to take the laptop in for service.
If it does boot normally, only plug-in the USB adapters that you currently need -- one or two at a time in order to prevent future overloads.

If you absolutely need all of the USB devices plugged-in at the same time, then I suggest that you buy an powered USB HUB to plug all devices in to.

Jan 01, 2011 | Computers & Internet

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Computer automatically powers down with out warning

It could be overheating, and shutting itself down, to avoid heat-related damage.

Turn the computer off.
Disconnect the AC adapter.
Remove the battery.
Purchase a can of compressed air, and give your computer a "blow-job" -- shooting compressed air everywhere "inside" your laptop, to remove dust.

The dust is acting as an insulator, preventing your computer's fans from cooling itself.

Or, take your laptop to a qualified computer technician, for more trouble-shooting.

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Computer turns off on its own not all the time but once or twice a week. I turn computer off when Iam not using it

It could be "bad" RAM (Windows crashes, and shuts itself down, to prevent corrupting the files on the disk-drive).

It could be "overheating" (hardware shuts down to prevent combustion).

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1 Answer

Hey there, My printer still works great BUT when I power down my PC, the next day when I power up, the printer will not turn on unless I unplug the power source and plug it back in, then it resets itself...

This can be a few possibilities. Here is a link to help you with the most common of them. HP also has a free software utility to help solve these problems.

Not listed by HP is two issues. 
#1 If your PC's USB ports are not powering down when the computer does, it will hold the printer "on" and it will error when you restart. Check for this by putting a flash drive in the USB port and power down the PC. If the light never goes out on the flash drive, then you know. This then is a motherboard issue. Try updating the Bios. It may in some cases not be fixable, if it is the MB.
#2 do not use a unpowered USB hub with printers or power issues will occur.

Good Luck

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Laptop went into sleep mode and will not turn back on

Try a Hard Reset, follow the steps below:

1) Unplug the AC Adapter from the notebook PC and remove from any port replicator or docking station.
2) Remove the battery from the notebook battery compartment
3) Press and hold the power button for about 20 seconds
NOTE: Holding down the power button while the computer is turned off drains any residual charge in the capacitors
4) Insert battery and plug the AC Adapter back into the notebook PC.
5) Press the power button to turn the notebook PC back on.

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1 Answer

Please Help

Hello Pookie34,

In general, most MP3 players are charged by connecting them to the USB port on your computer using the supplied programming cable. Make sure you are connecting the cable to a USB port on the computer itself and not a USB hub as most USB hubs do not have enough output power to charge your device.

Your MP3 player can also probably be charged by connecting it to an appropriate AC wall charger or automobile power cable. However, for most manufacturers these are optional accessories not normally included with the player.

Best Regards.

"Go Ahead. Use Us."

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