12 “ PCI slot is occupied by the 166 MHz PC Compatibility card (see PC Compatibility Card section in GURU for details).
The 4400 can take only 3.3 volt EDO (extended data out) DIMMs. It does not support interleaved memory. The three DIMM sockets are NOT identical. The first socket can only accept up to 32 MB DIMMs. The other two sockets can accept up to 64 MB DIMMs. The maximum memory is therefore 160 MB.