Not Enough Power for USB Devices?

[j@cko]

I have a Epox 8KHA+ with all the extra 2 USB plug installed, which makes the total of 4. (2 on board)
Anyway, I have a web cam, a scanner, and a mouse all installed on the USB plug.
However, when I was trying to install the joystick, it wasn't detect by the WindowsXP. So I had to unplug all other USB devices in order for Windows to detect the stick.
What should I do here? Would a USB hub help? Is there anyway without getting the hub and getting this to work properly with all devices plugged?

 

[Lord Evermore]

I was going to reply, but then the site timed out while submitting the reply.

 

[spanky]

r u saying that u can't connect four usb devices simultaneously?

 

[j@cko]

r u saying that u can't connect four usb devices simultaneously?

That would be correct.

 

[John]

A powered USB hub should do the trick.

 

[Lord Evermore]

Part of my reply was going to include: if you're connecting them each on different ports, power should not be the issue. Each root hub has 500mA available to it. Generally each port can draw 100mA I think, but having two high draw devices on one root hub might be an issue.

I'd bet the scanner is actually what's causing your problems. If you have the option to externally power that, you could probably fix the problem that way. Your mouse and webcam are not taking much power, but if the joystick is a heavy draw, combined with the scanner, it might be too much. If you can use the joystick as well as the mouse and webcam at the same time, then the scanner is the problem, and a hub is sort of an overkill solution (you still won't be able to plug all 4 devices into the hub, but you could plug a couple into the hub and the others into the computer's ports). If just using an external power plug for the scanner fixes it, that's obviously cheaper and easier.

Keep in mind you need a powered hub, not a self-powered hub.

 

[Nocturnal]

for some reason this has been happening to me. i cant install windows without taking out all the usb devices maybe it is a power supply issue.