I'm trying to find a legacy Mac that I can use to boot into Mac OS 9. I've found an old iMac G4 in the classified ads, but it has Mac OS X currently installed and I'm not sure if it's compatible with Mac OS 9. This is what I could learn about it by looking at Hardware Overview in System Profiler:
Machine Name: iMac Machine Model: PowerMac4,2 CPU Type: PowerPC G4 (2.1) Number of CPUs: 1 CPU Speed: 800 MHz L2 Cache (per CPU): 256 KB Memory: 1 GB Bus Speed: 100 MHz Boot ROM Version: 4.4.0f1 Serial Number: <redacted>
Based on this information, it seems to match two different models on EveryMac: M8535LL/A and M9105LL/A. But only one of those models has support for booting into Mac OS 9. Is there any way for me to identify which exact model is this computer? Do they have different Boot ROM? I want to know for sure before I buy it, and I can't try installing Mac OS 9 on somebody else's computer.