Sega System 8 Pinout
| SOLDER SIDE | PARTS SIDE |
| GND | GND |
| GND | GND |
| +5V | +5V |
| +5V | +5V |
| +12V | +12V |
| COUNT2 | COUNT1 |
| KEY | KEY |
| P2B3 | P1B3 |
| P2B2 | P1B2 |
| P2B1 | P1B1 |
| P2B4 | P1B4 |
| P2DOWN | P1DOWN |
| P2UP | P1UP |
| P2RIGHT | P1RIGHT |
| SOLDER SIDE | PARTS SIDE |
| GND | GND |
| GND | GND |
| +5V | +5V |
| +5V | +5V |
| +12V | +12V |
| COUNT2 | COUNT1 |
| KEY | KEY |
| P2B3 | P1B3 |
| P2B2 | P1B2 |
| P2B1 | P1B1 |
| P2B4 | P1B4 |
| P2DOWN | P1DOWN |
| P2UP | P1UP |
| P2RIGHT | P1RIGHT |