Ok, I thought it was worth testing so I tried to put the card back. It does not lock, there is no click. Pushing after inserting it does nothing. It is just a push/pull slot. I am disappointed that as expensive as this thing was that it does not work as you described as I would expect it should. Fortunately I was able to get it out easier this time as I was able to get a better look at it and see the little raised portion and get just enough of a grip to pull it. I have no intention of ever using this slot again.