Don't know what you have or what you're doing with it.
However, here's an example of what you can find on some sites
regarding the lights. This one is Plextor SCSI CDRW lights;
On Tue, 25 Nov 2003 05:53:45 -0800, "Brian Bartz @ XXXX@XXXXX.COM "
Bait for spammers:
Remove "spamless" to email me.