I've connected 3 LEDs to the GPOs with now problem Am using a yellow, green, and red 3.5V LED for each and haven't had a problem. I've been using one for new mail, one for heat caution and one for high temp on the processor. Works gret. I have the MX213.
http://fp1.centurytel.net/speedwolf/images ...

Using MX213
LCDC (included with screen)
MM5
Easy to install and mod thanks to the posts here.
http://fp1.centurytel.net/speedwolf/images/MB_and_CPU_Temp.jpg
http://fp1.centurytel.net/speedwolf/images/Current_Weather.jpg http://fp1.centurytel.net/speedwolf/images/Corner_Shot_with_Lights.jpg http ...

I couldn't have gotten my LCD up and running without all of the help of the posting in this forum. Thanks to all the info, I am now running:
MX213 2X20 LCD
LCDC
MM5
Using 3 GPOs to run 3 LEDs for email notification and CPU overheat
Looking into using the remaining high power GPOs to power additional ...