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Signal assignments for the NuBus row B listed below.
Refer here for NuBus Signal assignments row A, or NuBus Signal pin out row C
| Pin # | Signal Name | Description |
|---|---|---|
| 1 | -12 V | -12 VDC |
| 2 | GND | Ground |
| 3 | GND | Ground |
| 4 | +5 V | +5 VDC |
| 5 | +5 V | +5 VDC |
| 6 | +5 V | +5 VDC |
| 7 | +5 V | +5 VDC |
| 8 | * | Reserved |
| 9 | * | Reserved |
| 10 | * | Reserved |
| 11 | * | Reserved |
| 12 | GND | Ground |
| 13 | GND | Ground |
| 14 | GND | Ground |
| 15 | GND | Ground |
| 16 | GND | Ground |
| 17 | GND | Ground |
| 18 | GND | Ground |
| 19 | GND | Ground |
| 20 | GND | Ground |
| 21 | GND | Ground |
| 22 | GND | Ground |
| 23 | GND | Ground |
| 24 | ** | Reserved |
| 25 | ** | Reserved |
| 26 | ** | Reserved |
| 27 | ** | Reserved |
| 28 | +5 V | +5 VDC |
| 29 | +5 V | +5 VDC |
| 30 | GND | Ground |
| 31 | GND | Ground |
| 32 | +12 V | +12 volts |
The slash before each of the NUbus signal names indicate that the line is active low.
Back to the main NuBus page for a bus description.
Nubus is obsolete and should not be used for new designs, use the PCIe Interface as an upgrade path.
The NuBus interface is obsolete and should not be used in up-coming designs.
Additional pinout tables for Apple protocols are listed on Apple Computer Buses.
No companies that have been identified that produce components for the NuBus interface.
The interface ICs for NuBus my be out of production.
However this site does include a generic listing of component manufacturers;
Refer to Component Manufacturers, ordered by company first name.
