The chassis provides a power distribution board, eliminating the use of cables for power distribution to various system components. The power distribution board provides connectors to allow both the power supply and the motherboard to be plugged directly into it. In addition, it provides a 6-pin power cable for power distribution to the multi-functional backplane board, a 5-pin cable used to provide power management signals to the motherboard, and an 8-pin (4-wire) connector to provide power to the motherboard for the processor subsystem.
The black slot connector is used to plug a blind mating edge connector from the power supply.
| Power Supply Edge Connector Slot Pinout | |||
| Pin | Signal | Description | Signal direction with respect to connector on PDB |
| B1 | -12V | Voltage of 12V input from power supply | Input to PDB |
| A1 | PS_ON# | Logic signal to enable main power supply outputs | Output from PDB |
| B2 | PwrOk | Indicates that all outputs are within regulation | Input to PDB |
| A2 | SDA | IPMB | I2C Data Bidirectional |
| B3 | Res | Reserved | |
| A3 | SCL | IPMB | I2C Clock Bidirectional |
| B4 | AC Warn | Warning to system that power supply has lost its AC input. No use. | Input to PDB |
| A4 | PSAlert# | Indicates power supply is operating beyond limits and has failed/may fail soon | Input to PDB |
| B5 | 5VSB | 5V Stand-by voltage | Input to PDB |
| A5 | ReturnS | Regulate out ground drops for all output voltages | Output from PDB |
| B6 | (Removed pin) | Keying pin. No connect | |
| A6 | Res | Reserved. | |
| A7 | Res | Reserved | |
| B8 | Res | Reserved | |
| A8 | 3.3VS | Regulate out drops for in system for 3.3V output | Output from PDB |
| 9 | Res | Reserved | |
| 10 | Res | Reserved | |
| 11 | 12V2 | Input to PDB | |
| 12 | 12V2 | Input to PDB | |
| 13 | 12V2 | Input to PDB | |
| 14 | 12V1 | Input to PDB | |
| 15 | 12V1 | Input to PDB | |
| 16 | 12V1 | Input to PDB | |
| 17 | Gnd | Ground | |
| 18 | Gnd | Ground | |
| 19 | Gnd | Ground | |
| 20 | Gnd | Ground | |
| 21 | Gnd | Ground | |
| 22 | Gnd | Ground | |
| 23 | Gnd | Ground | |
| 24 | Gnd | Ground | |
| 25 | Gnd | Ground | |
| 26 | 5V | Input to PDB | |
| 27 | 5V | Input to PDB | |
| 28 | 5V | Input to PDB | |
| 29 | 3.3V | Input to PDB | |
| 30 | 3.3V | Input to PDB | |
| 31 | 3.3V | Input to PDB | |