"Roger" <> wrote in message
news:%238yln%...
> I've purchased 2 different USB2 Memory Keys and in each case when I put it in Vista says do
> you want to use to speed up system, say yes but it then comes back saying device does not
> have the necessary performance characteristics?
>
> How can I find out what performance characteristics its supposed to have or what do I need to
> do to get a device to work?
ReadyBoost can be a tricky thing to get working
on some flash drives, and a lot of flash drives
just aren't fast enough for ReadyBoost.
Sometimes formatting the drive can do the trick.
Either FAT or FAT32.
Try this also;
Go into Device Manager>Disk Drives
Find your flash drive. Double click it.
Policies tab.
Make sure "Optimize for performance" is checked.
Test again.
Make sure it's not plugged into a USB hub.
Or, try plugging it into another slot.
ReadyBoost - Using Your USB Key to Speed Up Windows Vista
http://blogs.msdn.com/tomarcher/arch...14/576548.aspx