Intel SLWBR Product Specification - Page 19

Intel© LB440GX 2U Rack Server Chassis TPS Rev 1.0 Server board to hot-swap backplanes § An Ultra-2 SCSI cable (68-pin) is provided to interface from the installed server board to the two hot-swap backplanes. § Two high-density 68-pin connectors in each backplane provide interface between the hotswap SCSI backplane and hot-swap SCSI devices. 9.2 Connector Interfaces Each pin is classified by type, as shown in the following table. Type PWR I/O O I O/C O/D Description Power connection (power or ground) Bi-directional signal Output signal Input signal Open-collector output signal Open-drain output signal Table 8. Pin Types 9.2.1 Hot-Swap Backplane and Peripheral Power Connectors The hot-swap backplane power connector and peripheral power connectors are a standard fourpin shrouded plastic PC power connectors with mechanical keying. Connector pinout is shown below. Figure 9. Peripheral power connector Name Pin Description +12V 1 +12 Volt power supply (yellow wire) GND 2 0V Electrical ground (black wire) GND 3 0V Electrical ground (black wire) +5V 4 +5 Volt power supply (red wire) Table 9. Peripheral power connectors 14