Intel
©
LB440GX 2U Rack Server Chassis TPS Rev 1.0
14
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 hot-
swap SCSI backplane and hot-swap SCSI devices.
9.2 Connector Interfaces
Each pin is classified by type, as shown in the following table.
Type Description
PWR Power connection (power or
ground)
I/O
Bi-directional signal
O
Output signal
I
Input signal
O/C
Open-collector output signal
O/D
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 four-
pin 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
