When I plug my memory card reader (Centrios) with a 4 GB SDHC hi-speed card into my PC, it doesn't show up in the drive list. Even looking in Computer Management, I can't see a removable disk device showing under Storage section. Is there a driver needed for this? It used to work fine with lower capacity (1 - 2 GB) cards.

Get a new memory card reader capable of reading SDHC. i_Xp/VistaUser

And you know this because....?

And you know this because....? Care to elaborate? If you don't trust me, pull out the manual for your computer and read for yourself what type of memory cards the memory card reader supports. Does it says SDHC (high capacity) is supported? i_Xp/VistaUser

I save wear and tear on my camera by using the USB cord from cam to PC and it works great. Constantly taking out a card from your cam puts alot of stress on a camera compartment. Just MHO Some HELP in posting on Computing.net plus free progs and instructions Cheers

I have the same issue with just a 2 Gig normal SDmemory card and it has no "HC" logo like my 4G Micro cards do! and when I put it on two different PC's one with older USB 1.1(2) and newer Gaming PC with USB 2.0 it say's to insert disk? Seems to me a software issue since these drives have not changed shape like going from floppy to diskette drive or 720k to 1.4meg drives. It would be more like the DVD when they came out with Blu-Ray same size disk just different format written on the disk itself requiring a special Blu-ray drive to read the finer lines and dual layers. Since they allowed the Japanese manufacture of this SD memory to get away without having to stick to one standard there are millions of people returning memory cards thinking they are bad, and some keeping knowing they are good thinking there PC is bad and waiting for an Update or software that will recognize these mass media storage devices. I for one think Microsoft should have included an update in there SP3 service pack for what we pay for our OS. but no, it's another accessory that they soon will start making money on selling universal mass media storage reader writer devices for 299.99 US. watch and see. I guess they should write on those SDmemory card packages that you will be required to buy an internal or external writer/reader for this device to be compatible with your PC's. And this device will not work on your USB port because it is in excess of 1G and thats all your OS will support. BigBeaver