Yes, there are TWO slots, but only ONE Upgrade Chip would go in .. and THAT was put in by Best Buy's Geek-Squad ... Everytime ( I ) try messing with those chips, I have to take it back to Best Buy and have them put the chip in for the Laptop to come on .. Including NOW .. I just retried to put the 2nd Upgrade chip in and it won't come on .. I put the Original back in and it STILL won't come on ...