part of my clearing operation. these are all left-overs from my sparcstation 10 era. quantity sun # description 3 501-2352 SM51 50MHZ 1MBcache 2 501-3001 SM71 75MGZ (1MB cache as i recall) 1 501-2607 SM51 50MHZ 1MBcache 1 501-2219 SM40 40MHZ these were all working when i put them away. ;ocated om 80301.