also - they aren't really that great I hate to say. after a couple decades of using them I still get the firmware confused by excessive modifier usage and have

also - they aren't really that great I hate to say. after a couple decades of using them I still get the firmware confused by excessive modifier usage and have to jam on all the keys to get it back again (spend a while with a support engineer trying to make it reproducible. they did try, that was something) the keys don't actually last all that long. they will sell you a new flex/key assembly for the left or the right side though - which is nice...oh yeah, and the function keys stop working pretty quick if you actually use them. but its so much more comfortable and speedy