Compaq 4200 Family - Manual (Page 27)

I/O Module 3–3
SCSI Bus Connectors
The 68-pin VHDCI connector enables you to configure the enclosure as single-bus, single
initiator subsystem.
SCSI Bus Termination
A SCSI bus is defined by two bus terminators. The external bus has terminators on the
controller and on the module. Each internal bus has a terminator on the module and on the
backplane. The module connects the external bus and the internal bus together. On each
module, there is a green LED (see Figure 3–2) that defines the status of internal bus,
backplane terminator.
Status Displays
See Figure 3–2 for the location of the two green status LEDs, and Table 3–1 for a
description of the LED displays.
Figure 3–2. Single Bus Status LEDs
1
Terminator Status LED
2
Power or Locate LED
CXO6983A
1
2