User manual INTEL DESKTOP BOARD DG41CN

[. . . ] Intel may make changes to specifications and product descriptions at any time, without notice. Intel Desktop Board DX79TO may contain design defects or errors known as errata which may cause the product to deviate from published specifications. Contact your local Intel sales office or your distributor to obtain the latest specifications and before placing your product order. Copies of documents which have an ordering number and are referenced in this document, or other Intel literature, may be obtained from Intel Corporation by going to the World Wide Web site at: http://www. intel. com/ or by calling 1-800-548-4725. Intel, Intel Core, and Xeon are trademarks of Intel Corporation in the United States and/or other countries. All rights reserved. Preface This Product Guide gives information about board layout, component installation, BIOS update, and regulatory requirements for Intel Desktop Board DX79TO. Intended Audience The Product Guide is intended for technically qualified personnel. [. . . ] Secure the card?s metal bracket to the chassis back panel with a screw (Figure 16, B). 42 Installing and Replacing Desktop Board Components Figure 16. Installing a PCI Express x16 Card Removing a PCI Express x16 Add-in Card Follow these instructions to remove a PCI Express x16 card from a connector: 1. Remove the screw (Figure 17, A) that secures the card?s metal bracket to the chassis back panel. Push the card ejector lever down using the tip of a pencil or similar tool (Figure 17, B) in the notch. Pull the card straight up. 43 Intel Desktop Board DX79TO Product Guide Figure 17. Removing a PCI Express x16 Card Installing Linked PCI Express x16 Graphics Cards The Desktop Board supports the use of linked PCI Express x16 graphics cards with Nvidia SLI technology and AMD CrossFire X technology. When installing linked graphics cards in the PCI Express x16 connectors, refer to the card manufacturer?s instructions to determine correct card placement and interconnection. Use the connectors included with the Desktop Board to connect the graphics cards together. NOTE The installations steps that follow provide general instructions, for more complete installation and configuration information refer to the documentation supplied by the graphics card manufacturer or visit their website. Install the first card in the PCI Express x16 connector as described in ?Installing PCI Express x16 Graphics Cards?on page 42. 44 Installing and Replacing Desktop Board Components 3. Place the second card in the secondary PCI Express x16 connector (Figure 18, A) and press down on the card until it is completely seated in the connector and the card retention notch on the card snaps into place around the retention mechanism pin on the connector. Table 9 shows the pin assignments and signal names for the front panel CIR receiver (input) header and Table 10 shows the pin assignments and signal names for the back panel CIR emitter (output) header. Front Panel CIR Receiver (Input) Header Signal Names Pin 1 3 5 7 Signal Name Ground No Connection +5 V Standby Key (no pin) Pin 2 4 6 8 Signal Name LED Learn-In Vcc CIR Input Table 10. Back Panel CIR Header Emitter (Output) Header Signal Names Pin 1 3 5 Signal Name Emitter Out 1 Ground Jack Detect 1 Pin 2 4 6 Signal Name Emitter Out 2 Key (no pin) Jack Detect 2 49 Intel Desktop Board DX79TO Product Guide USB 2. 0 Headers Figure 20, E shows the location of the USB 2. 0 headers. Table 11 shows the pin assignments and signal names for each USB 2. 0 header. USB 2. 0 Header Signal Names USB Port A Pin 1 3 5 7 9 Signal Name Power (+5 V) DD+ Ground Key Pin 2 4 6 8 10 USB Port B Signal Name Power (+5 V) DD+ Ground No Connection NOTE Computer systems that have an unshielded cable attached to a USB port might not meet FCC Class B requirements, even if no device or a low-speed USB device is attached to the cable. Use a shielded cable that meets the requirements for a full-speed USB device. Front Panel Header Figure 20, G shows the location of the front panel header. Table 12 shows the pin assignments and signal names for the front panel header. Front Panel Header Signal Names Pin 1 3 5 7 9 Description Hard Drive Activity LED Hard disk LED pull-up to +5 V Out Hard disk active LED Reset Switch Ground Reset switch Power Power Out 10 No pin In 6 8 Ground Not Connected Out 2 4 In/Out Pin Description Power LED Front panel green LED Front panel yellow LED On/Off Switch Power switch In Out Out In/Out 50 Installing and Replacing Desktop Board Components Alternate Front Panel Power LED Header Figure 20, H shows the location of the alternate front panel power LED header. Pins 1 and 3 of this header duplicate the signals on pins 2 and 4 of the front panel header. If your chassis has a three-pin power LED cable, connect it to this header. Table 13 shows the pin assignments and signal names for the alternate front panel power LED header. [. . . ] If this equipment does cause harmful interference to 81 Intel Desktop Board DX79TO Product Guide radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: ?Connect the equipment to an outlet on a circuit other than the one to which the receiver is connected. Consult the dealer or an experienced radio/TV technician for help. Any changes or modifications to the equipment not expressly approved by Intel Corporation could void the user?s authority to operate the equipment. Tested to comply with FCC standards for home or office use. Canadian Department of Communications Compliance Statement This digital apparatus does not exceed the Class B limits for radio noise emissions from digital apparatus set out in the Radio Interference Regulations of the Canadian Department of Communications. [. . . ]