The PC Engine family went through a lot of power supply revisions. Different internal and external tip sizes, voltages and polarity. Here's a list of the different models and settings.
| PC Engine Model | Voltage | Amps | Polarity | Part No. |
|---|---|---|---|---|
| PC Engine | 9V | 650mA | - | PAD-105 + PAD-106 |
| CoreGrafx I+II | 9V | 800mA | - | PAD-105 + PAD-106 |
| PC Engine Shuttle | 9V | 800mA | - | PAD-105 + PAD-106 |
| SuperGrafx | 9V | 800mA | - | PAD-113 |
| PC Engine GT | 7V | 700mA | PAD-121 | |
| CD-ROM2 | 9V | 1450mA | PAD-123 | |
| PC Engine Duo | 10V | 1A | + | PAD-124 |
| Super CD-ROM2 | 12V | 1A | + | PAD-125 |
| Duo Monitor | 10.5V | 750mA | PAD-126 | |
| PC Engine LT | 9V | 700mA | + | PAD-127 |
| DUO-R + RX | 9V | 1A | + | PAD-129 + PAD 130 |
| Print Booster | 12V | 1A | PAD-111 |
* Polarity refers to the center tip