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The Intel® Desktop Board D850GB contains two separate USB controllers supporting four USB ports. One USB peripheral can be connected to each port. For more than four USB devices, an external hub can be connected to any of the ports. Two of the USB ports are implemented with stacked back panel connectors. The other two are accessible via the front panel USB connector at location J9C1. One of the front panel USB connectors can be routed to the optional CNR connector. The D850GB board fully supports UHCI and uses UHCI-compatible software drivers.
Note: Computer systems that have an unshielded cable attached to a USB port may not meet FCC Class B requirements, even if no device is attached to the cable. Use shielded cable that meets the requirements for full-speed devices.
Use the pin and signal name designators in the table below for attaching your USB cable to the Intel® Desktop Board. Front USB cables / headers are available for many sources. Intel Corporation does not manufacturer a USB cable for the front USB connector. Table: Front Panel USB Connector (J9C1)
| Pin | Signal Name | Pin | Signal Name | | 1 | VBUS 0 (Power) | 2 | VBUS 1 (Power) | | 3 | Series 0 (D-) | 4 | Series 1 (D-) | | 5 | Series 0 (D+) | 6 | Series 1 (D+) | | 7 | Ground | 8 | Ground | | 9 | Key (no pin) | 10 | Not Connected |
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Figure: Front USB Header Location (J9C1 - Item B)
| Item | Description | Reference Designator | | A | SCSI LED | J7A2 | | B | Front Panel USB | J9C1 | | C | Auxiliary front panel power LED | J8C3 | | D | Front Panel | J9D2 |
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This applies to:
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