Anything made in March 2005 is definitley the /1 model.
The only addition to the /1 model of the 20 and 14 was ability to play 24psf, but then
I read on a forum it was only able to do this through HDsdi in.
I wish I had known that before I sold my second 20L5 with extra component input board for only $1750!!!
Now I find out they are going for like $4000 on ebay since you can’t find them anywhere.
At least I have one 20L5/1 as my main edit monitor, and I recently picked up a brand new
14L5/1 for $1000 !!!! What luck – I needed a good on set monitor for my HVX200 that we could light off
of, and no LCD will suite that purpose. I love this series of monitor.