The ASRX uses 72 pin SIMM 4Q, SIMM8Q, SIMM16Q, SIMM32Q - 2 meg stock sold on mother board - ONE SIMM sockets total , 70usec faster, 5 volt chip, 3 volt SIMM will not work, EDO or Non EDO SIMM, Can either be X32 or X36 - Possible Configurations:

2 meg - Stock ram
6 meg - Stock ram + (1) SIMM4Q
10 meg - Stock ram + (1) SIMM8Q
18 meg - Stock ram +(1) SIMM16Q
34 meg - Stock ram +(1) SIMM32Q