Back Panel I/O Connectors Component-side Connectors Front Panel Connectors

Front Panel USB Connectors Front Panel IEEE 1394a Connectors (Optional)

Back Panel I/O Connectors

The back panel configuration is dependent upon which audio subsystem is present. The configurations are as follows: 8-channel (7.1) audio subsystem (five analog audio output connectors and two digital audio output connectors) 6-channel (5.1) audio subsystem (three analog audio output connectors)

Back Panel Connectors For 8-Channel (7.1) Audio Subsystem

The figure below shows the location of the back panel connectors for boards equipped with the 8-channel (7.1) audio subsystem. The back panel connectors are color-coded. The figure legend below lists the colors used (when applicable).

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.

Item Description Color A PS/2* mouse port Green B Parallel port Burgundy C IEEE-1394a connector (optional)   D LAN   E Audio line in/Retasking Jack C Blue F Front left/right channel audio out/Two channel audio line out/Retasking Jack D Lime green G Mic in/Retasking Jack B Pink H Center channel and LFE (subwoofer) audio out/Retasking Jack G Orange I Surround left/right channel audio out/Retasking Jack H Black J USB ports (four)   K VGA port Blue L Serial port A Teal M PS/2 keyboard port Purple

Back Panel Connectors For 6-Channel (5.1) Audio Subsystem

The figure below shows the location of the back panel connectors for boards equipped with the 6-channel (5.1) audio subsystem. The back panel connectors are color-coded. The figure legend below lists the colors used (when applicable).

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.

Item Description Color A PS/2* mouse port Green B Parallel port Burgundy C IEEE-1394a connector (optional)   D LAN   E Audio line in/Retasking Jack C Blue F Front left/right channel audio out/Two channel audio line out/Retasking Jack D Lime green G Mic in/Retasking Jack B Pink H USB ports (four)   I VGA port Blue J Serial port A Teal K PS/2 keyboard port Purple

Component-side Connectors

The figure below shows the location of the component-side connectors.

Item Description A Front panel audio connector B Chassis intrusion connector C Main Power connector D Front panel USB connectors E PCI Express* x1 bus add-in card connector F PCI Conventional* bus add-in card connector 2 G PCI Conventional bus add-in card connector 1 H PCI Express x16 bus add-in card connector I Alternate power connector J Diskette drive connector K Front panel IEEE-1394a connectors (optional) L Front chassis fan connector M Front panel connector N Auxiliary front panel power LED connector O Processor core power connector (2 x 2) P Processor fan connector Q Parallel ATA IDE connector R ATAPI CD-ROM connector (optional) S Rear chassis fan connector T Serial ATA connector (4)

Add-in Card Connectors

The board has the following add-in card connectors:

One PCI Express* x16 connector supporting simultaneous transfer speeds up to 8 GBytes/sec One PCI Express x1 connector. The x1 interfaces support simultaneous transfer speeds up to 500 MBytes/sec Two PCI Conventional* rev 2.2 compliant local bus slots. The SMBus is routed to PCI Conventional bus connector 2 only (ATX expansion slot 6). PCI Conventional bus add-in cards with SMBus support can access sensor data and other information residing on the Desktop Board. Note the following considerations for the PCI Conventional bus connectors: All of the PCI Conventional bus connectors are bus master capable SMBus signals are routed to PCI Conventional bus connector 2. This enables PCI Conventional 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

NOTE The PCI Express x16 connector is configured to support only a PCI Express x1 link when the Intel® GMA900 graphics controller is enabled.

Front Panel Connectors

This section describes the front panel connectors. Front Panel Connector Front Panel USB Connectors Front Panel IEEE1394a Connectors (Optional)

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. The figure below is a connection diagram for the front panel connector.

Pin Signal In/Out Description Pin Signal In/Out Description Hard Drive Activity LED [Yellow] Power LED [Green] 1 HD_PWR Out Hard disk LED pull-up (750 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 Reset Switch [Purple] On/Off Switch [Red] 5 Ground   Ground 6 FPBUT_IN In Power switch 7 FP_RESET# In Reset switch 8 Ground   Ground Power Not Connected 9 +5 V   Power 10 N/C   Not connected

Front Panel USB Connectors

The figure below is a connection diagram for the front panel USB connectors.

Integrator's Notes The +5 V DC power on the USB connector is fused. Pins 1, 3, 5, and 7 comprise one USB port. Pins 2, 4, 6, and 8 comprise one USB port. Use only a front panel USB connector that conforms to the USB 2.0 specification for high-speed USB devices.

Front Panel IEEE 1394a Connectors [Blue] (Optional)

The figure below is a connection diagram for the optional IEEE 1394a connectors.

Integrator's Notes The IEEE 1394a connectors are colored blue. The +12 V DC power on the IEEE 1394a connectors is fused. Each IEEE 1394a connector provides one IEEE 1394a port. For more information about the connectors, see the Intel® Desktop Board D915GMH Technical Product Specification

Updated: Monday, November 15, 2004