Original Apple, fully tested Power Supply, Rev. B for the Power Macintosh/Performa 5200-5220 and Performa 5300, 5400 & 5500 Series.
There are two Rev. A versions and one Rev. B version of the Power Supply for he 5000 series which are non-interchangeable.
• Rev. A 661-0331 with a thermistor at CN13
• Rev. A 661-0930 without a thermistor at CN13
• Rev. B 661-1117 with a thermistor at CN9