Template:FAQ/Questions/external interfaces do you

Which external interfaces do you support?
The gumstix platforms and their related expansion boards have a very broad range of supported interfaces,

Both gumstix platforms (basix and connex) provide a 60-pin connector that gives access to 42 GPIO lines (3.3V logic), I2C, USB, JTAG, and of course, power &amp; ground. Most of the GPIO lines can be used in a form of alternate function-- there are 3 UART ports, a NSSP, 2-PWM lines, AC97 (audio) controller, and LCD controller. there is also an MMC card slot and an optional bluetooth module on the gumstix basix platform.

for further details on the expansion capabilities of the gumstix products, go [here].