It's been quite a few years since we carried these alternate PALs. In case you find someone out there with an older card, here's what you'd look for: Location U28 - 1.00A Location U27 - 2.01A Keep in mind that these were created to allow the SAII to work in the original Mac II, Yhough they also helped the card work in some of the 'newer' Quadra's and NuBus PowerMac's, there were never officially tested or supported with those computers.