This kit includes 4 modules of 64MB SIMMs your Sun Microsystems Ultra 1 or Ultra 2 machine. I pulled these out in working condition from my Ultra 2 when I upgraded. I believe they may also work for the SPARCstation 20 as well.

long time computer enthusiast trying to clear out old stuff. this was pulled from an old computer I upgraded but I no longer have (and hence can not test), it was in working condition the last time it was used. looking for vintage PC collector who might want this.