USB ports getting me mad!

**bimmerpc** · 07-18-2006, 07:54 PM

My usb hubs and ports are getting me mad.
I have moved around cables over and over again and I really dont getting any logics on this.
I want to have usb 2.0 signals but the total power seems insufficient. My mouse works very randomly on occasions especially when connected near bluetooth dongle
Various devices hangs/stops working. What is the best thing in a car when You have MANY usb products?
does the power supplies (i.e carnetix) have some kind of usb outputs or is there any regular-power-plug -> usb feed?

I have a notepad with only usb 1 capability. Thats why I got myself a pcmcia adapter with usb 2.0 ports (2usb+1firewire)
I also got a cooling-fan-hub under my laptop to make it more suitable for inside car mount.

The fan-hub and the pcmcia both has got a round power input so that I can power it from another usb port.

I only have one on the back of my laptop for using as power source.
I only have one power cable currently

I will have to get both usb-signals and usb power from somewhere and are most interested in getting the usb2.0 signals.

I finally think I am reaching somewhere but I dont understand why it works:

**ODYSSEY** · 07-18-2006, 07:59 PM

USB hub and a POL.

**Jahntassa** · 07-19-2006, 01:09 AM

Wait, is your PCMCIA card a HUB, or actually two ports? Usually PCMCIA USB cards is for adding more ports.

If your Cooling pad hub is powered off the USB port on the back of the computer, possibly it's not getting enough power. Of course since you're trying to power the PCMCIA card which may already have it's own power, you're probably screwing up the loads.

Go into the device manager in windows and look for the entries called 'Universal Root Hub', there are probably a few, look through those and look at the 'power' tab within each one to see how much power is available per port, and how much each port is reporting in use.

**bimmerpc** · 07-19-2006, 07:10 AM

This is my cardbus pcmcia:
http://cgi.ebay.co.uk/Combo-Pcmcia-U...QQcmdZViewItem

This is my cooler pad hub
http://cgi.ebay.co.uk/New-Notebook-L...QQcmdZViewItem

The pcmcia usb card does not work without external powercable.
The usb cooling pad also has to be feeded from somewhere

So I am all ears for how to make the power to be suitable. I plan to add more items, soundcards, dvd-player external, so somehow I need to take the power from somewhere else, because the one usb port on the back I guess doesnt hold everything.

PCMCIA card doesnt work by itself without the external power cable plug.
But if I power the usb cooling pad from the usb port on the back of laptop and then take the usb signal from the PCMCIA card, the PCMCIA card starts to work and I can use the other port on the card without adding the power cable

Jahntassa: I checked the power tabs and each tab can feed 500mA. Mouse 100mA, touchscreen 100mA, wifi 500mA, bluetooth dongle 0mA. Doesnt say if anything is wrong about the cooling pad itself having any needs, it just says that the cooling hub has its own power source. Just that the dongle lights up weaker when I turn the fans on inside the cooling pad (for example)