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5 General Information ................................................................................. 5 Summary of Changes ............................................................................... 6 Intel Desktop Board DH55HC Specification Update Specification Update for the IntelSpecification 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. Refer to the Intel® Core™ i7-800 and Intel ®Core™ i5-700 Desktop Processor Series Specification Update (Order Number: 322166) as well as to the Intel® Core™ i5-600, Intel® Core™ i3-500 Desktop Processor Series and Intel® Pentium® Processor G6950 Series Specification Update (Order Number: 322911) for specification updates concerning supported processors that may apply to the desktop board DH55HC. Unless otherwise noted in this document, it should be assumed that any Processor errata for a given stepping are applicable to the Altered Assembly (AA) revision(s) associated with that stepping. Refer to the Intel® 5 Series Chipset and Intel® 3400 Series Chipset Specification Update (Order Number: 322170) for specification updates concerning the Intel® H55 Express Chipset that may apply to the desktop board DH55HC. Unless otherwise noted in this document, it should be assumed that any Platform Controller Hub errata for a given stepping are applicable to the Altered Assembly (AA) revision(s) associated with that stepping. Intel Desktop Board DH55HC Specification Update Terminology Terminology Errata are design defects or errors. Characterized errata may cause the desktop board behavior to deviate from published specifications. Hardware and software designed to be used with any given Altered Assembly (AA) and BIOS revision level must assume that all errata documented for that AA and BIOS revision level are present on all desktop boards. Specification Clarifications describe a specification in greater detail or further highlight a specification’s impact to a complex design situation. These clarifications will be incorporated in the next release of the specifications. Documentation Changes include typos, errors, or omissions from the current published specifications. These changes will be incorporated in the next release of the specifications. General Information Basic Desktop Board DH55HC Identification Information AA Revision BIOS Revision Notes E70933-500 TCIBX10H.86A.0026 1,2 E70933-501 TCIBX10H.86A.0027 1,2 E70933-502 TCIBX10H.86A.0027 1,2 E70933-503 TCIBX10H.86A.0032 1,2 E70933-504 TCIBX10H.86A.0035 1,2 E70933-505 TCIBX10H.86A.0037 1,2 Notes: 1. The AA number is found on a small label on the component side of the board. 2. The Intel® H55 Express Chipset used on this AA revision consists of the following component: Device Stepping S-Spec Numbers 82H55 Platform Controller Hub (PCH) B3 SLGZX Intel Desktop Board DH55HC Specification Update Summary of Changes Summary of Changes ® 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. Plan Fix: This erratum may be fixed in a future revision of the desktop board, driver, or BIOS. Fixed: This erratum has been previously fixed. No Fix: There are no plans to fix this erratum. Shaded: This erratum is either new or modified from the previous version of the document. No. Plans Specification Changes 1 Doc Updated Section 2.2.2.2 and Section 2.2.2.6 of the Technical Product Specification as shown in the Specification Changes Section below. No. Plans Errata There are no characterized erratum for this product. Specification Changes The Specification Changes listed in this section apply to the Intel® Desktop Board DH55HC Technical Product Specification (Order Number E82983). 1. Updated Section 2.2.2.2 Add-in Card Connectors and Section 2.2.2.6 Front Panel USB Headers of the Intel Desktop Board DH55HC Technical Product Specification as shown below. 2.2.2.2 Add-in Card Connectors The board has the following add-in card connectors: • One PCI Express 2.0 x16: this connector supports simultaneous transfer speeds of up to 8 GB/s of peak bandwidth per direction. • Two PCI Express 2.0 x1: each of these connectors support simultaneous transfer speeds of up to 250 MB/s (2.5 GT/s) of peak bandwidth per direction. • Three Conventional PCI (rev 2.3 compliant) connectors. Intel Desktop Board DH55HC Specification Update 2.2.2.6 2.2.2.6 Figure 12 is a connection diagram for the front panel USB headers. NOTES • The +5 V DC power on the USB...