got it, thanks. non of my externals support smart, but the laptop is the mad hd, so I'll check that out.
SMART is a bus polling protocol, so it only is supported on hard drives directly attached, such as (e)SATA, IDE, or SCSI. I assume fiber channel also supports SMART.
The usual not-included are networked, firewire, and usb.
Interesting, I just tested an esata drive of mine, attached via expresscard on my mbp, and it too supports SMART, because the card attaches it onto the SATA bus.
