>From MemoryX: SPARCstation5 Max 256MB Slots 8 Comments install 1 dimm at a time in this order: J0300, J0301 J0302, J0303, J0400, J0401, J0402, J0403 So, you should be fine with one slot empty, provided your remaining chips are in the right order. Dan -- Dan Debertin airboss at nodewarrior.org www.nodewarrior.org