I surely don't, but since I only have two, that could be why I don't know... I'll poke around and see what I can find out
::: ETA ::: Okay, I just checked a site, and they say there's a small hole in the back of the e/s. So, you should be able to just poke a pin through the whole and pop it out. I peeled the label off the back of my ME Green 550, and it's in the top right hand side of the e/s (newer packaging).