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Contents Connectors
Caution
Only the back panel connectors of this Intel® Desktop Board D850GB board have overcurrent protection. The Intel Desktop Board D850GB's internal connectors are not overcurrent protected and should connect only to devices inside the computer's chassis, such as fans and internal peripherals. Do not use these connectors to power devices external to the computer's chassis. A fault in the load presented by the external devices could cause damage to the computer, the interconnecting cable, and the external devices themselves.
This section describes the board's connectors. The connectors can be divided into the following groups: Back Panel I/O Connectors
The figure below shows the location of the back panel connectors. The back panel connectors are color-coded in compliance with PC 99 recommendations. The figure legend below lists the colors used.
| Item | Description | Color | | A | PS/2 mouse port | Green | | B | PS/2 keyboard port | Purple | | C | USB port 0 | Black | | D | USB port 1 | Black | | E | Parallel port | Burgundy | | F | Serial port | Teal | | G | LAN (optional) | Black | | H | Audio line in (optional) | Light blue | | I | Audio line out (optional) | Lime green | | J | Mic in (optional) | Pink |
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Note: The back panel audio line out connector is designed to power headphones or amplified speakers only. Poor audio quality occurs if passive (non-amplified) speakers are connected to this output.
Internal I/O Connectors
The internal I/O connectors are divided into the following functional groups: Audio
The figure below shows the location of the audio connectors.
| Item | Description | Color | Reference Designator | | A | Auxiliary line in, ATAPI style (Optional) | White | J2C1 | | B | ATAPI CD-ROM (Optional) | Black | J2D1 | | C | CD-ROM, Legacy style, 2 mm (Optional) | White | J2D2 | | D | PC/PCI | N/A | J6D1 |
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Power and Hardware Control Connectors
The figure below shows the location of the power and hardware control connectors.
| Item | Description | Reference Designator | | A | ATX12V power connector | J3H1 | | B | Processor voltage regulator fan (Fan 4) | J3M1 | | C | RIMM fan (Fan 2) | J7M2 | | D | Processor fan (Fan 3) | J6L1 | | E | Main Power | J10K1 | | F | Auxiliary power | J9J1 | | G | Wake on Ring | J8C1 | | H | Wake on LAN* technology | J7C1 | | I | Chassis fan (Fan 1) | J10A2 |
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Add-in Board and Peripheral Interface Connectors
The figure below shows the location of the add-in board connector and peripheral connectors. Note the following considerations for the PCI bus connectors: - All of the PCI bus connectors are bus master capable.
- PCI bus connector 2 has SMBus signals routed to it. This enables PCI bus add-in boards with SMBus support to access sensor data on the board. The specific SMBus signals are as follows:
- The SMBus clock line is connected to pin A40
- The SMBus data line is connected to pin A41
| Item | Description | Reference Designator | | A | Communication and networking riser (CNR) | J3A1 | | B | PCI bus connector 5 | J4A1 | | C | PCI bus connector 4 | J4B1 | | D | PCI bus connector 3 | J4C1 | | E | PCI bus connector 2 | J4D1 | | F | PCI bus connector 1 | J4E1 | | G | AGP connector | J5E1 | | H | Diskette drive | J10G1 | | I | Primary IDE | J9G2 | | J | Secondary IDE | J9G1 |
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External I/O Connectors
The figure below shows the location of the external I/O connectors.
| Item | Description | Reference Designator | | A | SCSI LED | J7A2 | | B | Front panel USB | J9C1 | | C | Auxilary front panel power LED | J8C3 | | D | Front panel | J9D2 |
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Front Panel Connector
This section describes the functions of the front panel connector. The table below lists the signal names of the front panel connector.
Front Panel Connector (J9D2)
| Pin | Signal | In/Out | Description | Pin | Signal | In/Out | Description | | 1 | HD_PWR | Out | Hard disk LED pull-up (330 ohm) to +5 V | 2 | HDR_BLNK_GRN | Out | Front panel green LED | | 3 | HAD# | Out | Hard disk active LED | 4 | HDR_BLNK_YEL | Out | Front panel yellow LED | | 5 | GND | | Ground | 6 | FPBUT_IN | In | Power switch | | 7 | FP_RESET# | In | Reset switch | 8 | GND | | Ground | | 9 | +5 V | Out | IR Power | 10 | N/C | | | | 11 | Reserved | In | Reserved | 12 | GND | | Ground | | 13 | GND | | Ground | 14 | (pin removed) | | Not connected | | 15 | Reserved | Out | Reserved | 16 | +5 V | Out | Power |
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For more information about the front panel connector, see the Intel® Desktop Board D850GB Technical Product Specification
This applies to:
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