HOW TO SET THE SWITCHES ON YOUR MEMORY BOARDS: (VERY IMPORTANT) There are only a limited number of possibile combinations, so rather than go into the theory, I will simply enumerate each of them and tell you EXACTLY how to set the switches. Sometimes reading the switches is confusing, and occasionally a user has set ALL the switches backwards. This is guaranteed not to work. Here's a hint: Your OLD board had switch 2 ONLY set on. We normally ship new boards set the same way. If you read the switches as 2 off, all others on, simply turn your eyes upside down and proceed. One 2 meg board ONLY (not recommended - gives you only 1 meg swap) Set the board for switch 2 only. One 1 meg board, one 2 meg board: Set the 2 meg board for switch 2 only. Set the 1 meg board for switches 2 & 8. Two 2 meg boards: Set one of the boards 2 only. Set the other board 2 & 8. Two 2 meg boards plus one 1 meg board: Set one of the 2 meg boards for 2 only. Set the other 2 meg board for 2 & 8. Set the 1 meg board for switches 2 & 6. Three 2 meg boards: Set one of the boards 2 only. Set another board 2 & 8. Set the third board 2 & 6. Three 2 meg boards plus one 1 meg board: Set one of the 2 meg boards 2 only. Set another 2 meg board 2 & 8. Set the third 2 meg board 2 & 6. Set the 1 meg board 2, 6, & 8.