Lenovo PC 300PL Technical Information Manual 6275, 6285 - Page 28
Jumper, Riser Card, Type 6285/6892, Floppy Device Access Switch 8
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Chapter 2. System-Board Features Switch 8 controls writes to the diskette drive. Figure 9. Floppy Device Access (Switch 8) Write enabled (factory default) Off Write protected On Jumper Jumpers on the system board are used for custom configurations. For the location of the Clear CMOS Request jumper, refer to the "System Board, Types 6862/6892 and 6275/6285" on page 14, above.. Figure 10. Clear CMOS Request Jumper (J9) Pins 1 and 2 2 and 3 Description Normal (Factory default) Clear CMOS/Password Riser Card, Type 6285/6892 The riser card in your computer has three dedicated ISA slots and three dedicated PCI slots. The following illustration shows the expansion slots and connectors on the riser card. ISA ISA ISA PCI PCI PCI CD Audio 340-Pin Connector Power Diskette Drive Disk Fan A Disk Fan B Fan Alert on LAN Wake on LAN Asset ID Antenna ChassisIntrusion Detector Primary IDE LED Panel Secondary IDE SCSI Hard Disk LED Internal Speaker Modem Wakeup The riser card plugs into the system board via a 340-pin connector. Adapters plug into the ISA- or PCI-expansion connectors (slots) on the riser card. Signals from adapters are routed to the ISA or PCI buses. Each ISA-expansion connector provides a 16-bit-wide data path, and each PCI-expansion connector provides a 32-bit-wide data path. Shared slots will accommodate either an ISA adapter installed in the ISA connector, or a PCI adapter installed into the PCI connector. Shared slots cannot accommodate ISA and PCI adapters at the same time. Note: The front fan is thermally controlled by the System Management Controller. The front fan for most configurations will be on for a short period of time, then will be turned off when the temperature of the system is controlled. 16 Technical Information Manual
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