smart card problem resolved

bauercrew · Post by **bauercrew** » Sun Mar 05, 2006 5:01 pm

hi just wanted to let everyone no that the smart card is now working,after numerous time of reloading encore and the drivers i switched the usb to the port that connects directly to motherboard,instead of the usb hub and BINGO it worked ,why it wouldnt work throught hub i dont know because EVERYTHING else that i have usb works through the hub,go figure.thought i would pass on the results

dvejr · Post by **dvejr** » Sun Mar 05, 2006 5:23 pm

Power issues. I'm guessing your is not a powered hub. Mine is, and mine worked there but not when plugged into the USB port on my monitor.
Doug

brasshopper · Post by **brasshopper** » Thu May 25, 2006 4:33 pm

I wished I'd read this - it would have saved me some time.

The hub that I had powered it in is a powered hub. I checked it with the "power" tab in XP and it said that it was self powered - I have plugged it in, it claims it has 500 Milliamperes per port available - just like the port that is attached to the system that it works in.

This device is just flaky. Even in the funky port, some things worked, some things didn't. I was able to read - but not write.

It works now that it is directly plugged in.

Myst be some ports it works in, some it does not. Powered is not the variable.

dvejr · Post by **dvejr** » Thu May 25, 2006 7:41 pm

I may not be using the right terms, but my "powered" USB hub has a DC power supply that plugs into the AC receptacle in the wall.

I no longer have the instructions that came with it, but my recollection is that if I disconnect its own power supply, it will then only be able to pass on to the devices I plug into it the limited current it can draw from my PC through the USB cable that connects the 2 together. This lesser amount of electric power is sufficient for some devices and NOT sufficient for others. But when it is connected to its own DC power source it has lots of power for the downstream devices.

Doug

brasshopper · Post by **brasshopper** » Thu May 25, 2006 9:24 pm

And you can tell a powered USB hub from an unpowered one by looking at the control panel - system - then the hardware tab - then device manager - view devices by connection - then look at the properties for the USB hub - then look at the power tab.

I do not believe that a USB port that is not powered can promise 500 Ma per port - it can only draw 500 Ma total from its upstream. I could be wrong - but the hub that failed for me has a wall wart - which also runs some fans.

smart card problem resolved