Display for an embedded device

Hi,

I don't know if this is the proper place to ask, so if anyone knows a better place just tell me...

Which kind of display devices are supported by the kernel? Which kind of tiny display devices do you recommend to use in a rackable PC? (it would be ideal to fit the display in the box of one rack unit)

Thanks in advance, and sorry if the message if so off topic.

Best regards,
Natanael.