Hi curaga
Ost mentioned blinking out error or status codes. Ethtool, from what I could tell, does not allow you
to control the LEDs, just blink them for N number of seconds. I checked /sys/class/leds on two
machines, one running TC3.4 and one running TC3.8.4 and both where empty, so I didn't pursue
that any further. The xset command being built in seemed like the simplest approach.