HP LH4r HP Netserver LXr 8500 Installation Guide - Page 73

Chapter 6 Installing Additional Boards • Four PCI slots (P7-P10) support full-length 32 or 64-bit boards at clock rates of 66 or 33 MHz. These slots only support boards with +3.3 VDC power and Universal boards. These slots have keys in the lower half of the board slot to prevent boards without +3.3 volt power from being inserted into the slots. The default bus speeds for slots 7-10 can be changed to 66 MHz in the Setup Utility. However, if a 33 MHz PCI adapter board is inserted into the bus, then the bus speed (at boot time) will be downgraded to 33 MHz. NOTE The HP NetServer has 4 Bus controllers handling four busses, 0, 1, 2, and 3 (default). If a DAC board or a similar type controller is installed, additional buses are automatically reassigned, up to 6 busses. 1 Reserved 2 Recovery Boot 3 Reserved Open 4 Reserved 5 CMOS Clear 6 Password Clear Shaded rectangle 7 PCI Hot-Swap Switch Disable represents the 8 Reserved depressed side of the configuration Open = Off Closed = On switch Front of HP NetServer Figure 6-2. I/O Baseboard Configuration Switch CAUTION To prevent a system crash or hang, do not close the PCI Hot Plug disable switch. If the PCI Hot Plug disable switch is closed, all Hot Plug capability for all PCI slots is lost and the HP NetServer must be shutdown to remove or replace boards. Installing Accessory Boards Use this procedure to install all PCI accessory boards for the following situations: • The initial installation of PCI Hot Plug boards 65