i dont have one on my rig. i thought i would never need one. i can tell you, though that there have been maybe 4 or 5 situations (in the year that i've had the computer) where i would have like to had one. always found some way around ABSOLUTELY needing one, though. you've got to decide if a little annoyance every now and then is worth 10-12 bucks to you. as for me, i'll keep my 10 bucks.