Diagnostic tools 73
For more information or to download the utility, refer to the HP website
(http://www.hp.com/servers/diags
).
USB support
HP provides both standard USB support and legacy USB support. Standard support is provided by the
operating system through the appropriate USB device drivers. HP provides support for USB devices before
the operating system loads through legacy USB support, which is enabled by default in the system ROM.
HP hardware supports USB version 1.1 or 2.0, depending on the version of the hardware.
Legacy USB support provides USB functionality in environments where USB support is normally not
available. Specifically, HP provides legacy USB functionality for:
• POST
• RBSU
• Diagnostics
• DOS
• Operating environments which do not provide native USB support
For more information on ProLiant USB support, refer to the HP website
(http://h18004.www1.hp.com/products/servers/platforms/usb-support.html
).
Troubleshooting the system using port 85 codes
For example, if the port 85 code displays "31h," see "Processor-related port 85 codes (on page
73)" for more information.
Port 85 code Description
3xh Port 85 codes in this format indicate processor-related errors. See "Processor-
related port 85 codes (on page 73)" for more information.
4xh Port 85 codes in this format indicate memory-related errors. See "Memory-related
port 85 codes (on page 74)" for more information.
6xh Port 85 codes in this format indicate expansion board-related errors. See
"Expansion board-related port 85 codes (on page 75)" for more information.
All other codes,
including 00h, 01h,
and 5xh
Port 85 codes in this range cover several areas. See the section "Miscellaneous
port 85 codes (on page 76)" for more information.
Processor-related port 85 codes
Processor-related port 85 codes display in the format 3xh.
IMPORTANT: Reboot the server after completing each numbered step. If the error condition
continues, proceed with the next step.
To troubleshoot processor-related error codes:
1. Bring the server to base configuration by removing all components that are not required by the
server to complete POST. This process can include removing all:
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