Intel® Desktop Board DH55HC Specification Update March 2011 Order Number: E90199-005US The Intel® Desktop Board DH55HC may contain design defects or errors known as errata, which may cause the product to deviate from published specifications. Current characterized errata are documented in this Specification Update.
Revision History Revision Revision History Date Intel® -001 This document is the first Specification Update for the Board DH55HC Desktop January 2010 -002 Update to the General Information section April 2010 -003 Update to the General Information section July 2010 -004 Update to the General Information section December 2010 -005 Update to the Specification Update Section March 2011 INFORMATION IN THIS DOCUMENT IS PROVIDED IN CONNECTION WITH INTEL® PRODUCTS.
Contents Specification Update for the Intel® Desktop Board DH55HC Terminology ............................................................................................ 5 General Information ................................................................................. 5 Summary of Changes ...............................................................................
Specification Update for the Intel® Desktop Board DH55HC This document is an update to the specifications contained in the Intel® Desktop Board DH55HC Technical Product Specification (Order Number: E82983). It is intended for hardware system manufacturers and software developers of applications, operating systems, or tools. It will contain Specification Changes, Errata, Specification Clarifications, and Documentation Changes.
Terminology Specification Changes are modifications to the current published specifications. These changes will be incorporated in the next release of the specifications. Errata are design defects or errors. Characterized errata may cause the desktop board behavior to deviate from published specifications.
Summary of Changes The following table indicates the Specification Changes, Errata, Specification Clarifications, or Documentation Changes that apply to the Intel® Desktop Board DH55HC. Intel intends to fix some of the errata in a future revision of the desktop board, and to account for the other outstanding issues through documentation or specification changes as noted. The following notations are used in the table: Doc: Document change or update that will be implemented.
2.2.2.6 Front Panel USB Headers Figure 12 is a connection diagram for the front panel USB headers. NOTES • • • The +5 V DC power on the USB headers is fused. Use only a front panel USB connector that conforms to the USB 2.0 specification for high-speed USB devices. USB Header 2 (FP USB 2) has Pin 10 routed to the HDD LED to support specific USB SSD devices. Connecting any device to this header, that has any connection to Pin 10, may cause the HDD LED to behave erratically or stay on continuously.
