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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 DH55PJ Specification Update 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. 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 DH55PJ Identification Information AA Revision BIOS Revision Notes E93812-300 TCIBX10H.86A.0032 1,2 E93812-301 TCIBX10H.86A.0035 1,2 E93812-302 TCIBX10H.86A.0037 1,2 E96351-300 TCIBX10H.86A.0032 1,2 E96351-301 TCIBX10H.86A.0035 1,2 E96351-302 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 DH55PJ Specification Update Summary of Changes The following table indicates the Specification Changes, Errata, Specification Clarifications, or Documentation Changes that apply to the Intel® Desktop Board DH55PJ. 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 2.2.2.1, Section 2.2.2.2, and Section 2.2.2.6 of the Technical Product Specification as shown in the Specification Changes Section below. 2 Doc Corrected the number of Conventional PCI connectors in Section 2.2.2.2 of this Specification Update from three to one. 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 DH55PJ Technical Product Specification (Order Number E95284). 1. Updated Section 2.2.2.1 Signal Table for the Connectors and Headers, Section 2.2.2.2 Add-in Card Connectors, and Section 2.2.2.6 Front Panel USB Headers of the Intel Desktop Board DH55PJ Technical Product Specification as shown below. 2.2.2.1 Signal Tables for the Connectors and Headers Table 1. Front Panel USB Header 2 Pin Signal Name Pin Signal Name 1 +5 VDC 2 +5 VDC 3 D. 4 D. 5 D+ 6 D+ 7 Ground 8 Ground 9 KEY (no pin) 10 LED# Intel Desktop Board DH55PJ Specification Update 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. 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. Figure 1. Connection Diagram for Front Panel USB Headers Figure 2. Connection Diagram for Front Panel USB Header 2 Intel Desktop Board DH55PJ Specification Update 2. Corrected the number of Conventional PCI connectors in Section 2.2.2.2 of this Specification Update from three to one. 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...