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Windows 95/98 On-board security (OBS) Drivers Setup Procedures Introduction On-board security (OBS) functions monitor key hardware. They help you maintain your system's stability and durability. The PCA-6176 can monitor 5 sets of system positive voltages, 2 sets of system negative voltages, CPU cooling fan speed, and CPU temperature. The positive system voltage sets which can be monitored include: CPU core voltage: 1.3 V ~ 3.3 V, according to Intel specifications Transmission voltage from CPU to chipset: typically 1.5 V Chipset voltage: typically 3.3 V Main voltage: +5 V, +12 V The negative system voltage sets which can be monitored include: Main voltage: -5 V, -12 V Installation of OBS Devices After you have mounted the CPU and cooling modules, enable the OBS functions as follows: 1. Take the specially designed temperature sensor cable out of the accessories bag. 2. Connect the 2-pin header of the cable to CN15. 3. Attach the sticker to the heat sink, but NOT on the plastic portion of the heat sink. 4. Place the sensor on the nearest part of the CPU, to ensure that true CPU temperature is measured. On-board security (OBS) Driver Installation Necessary prerequisites The instructions in this manual assume that you understand elementary concepts of MS-DOS and the IBM personal computer. Before you attempt to install any driver or utility, you should know how to copy files from a floppy disk/CD to a directory on the hard disk. You should also understand the MS-DOS directory structure, and know how to format a floppy disk. If you are uncertain about any of these concepts, please refer to DOS or Windows user reference guides for more information before you proceed with the installation. Before you begin Before you begin installing software drivers, you should make a backup copy of the display driver disk/CD and store the original in a safe place.