HP LH4r HP Netserver LXr 8500 Installation Guide - Page 20

Communication Ports

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Chapter 2 Controls, Indicators, and Ports CAUTION If you remove a power supply, it is imperative to wait at least 15 seconds before reinserting it. The delay gives the power supply's inrush protection circuit time to reset itself. If the circuit does not have time to reset, the supply draws a larger than normal inrush current and may trip main circuit breakers or UPS breakers. Communication Ports Figure 2-7 identifies the ports on the HP NetServer's rear panel. Keyboard External SCSI Mouse Serial Port B Serial Port A VGA LPT1 NOTE USB Not Used Figure 2-7. Rear Panel Ports The keyboard and mouse ports are interchangeable and at boot time the I/O Riser board automatically detects which device is connected to the port. The I/O Riser board, located on the I/O baseboard behind the rear panel connectors, contains the electronic circuitry to support all of its connections. 12

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Chapter 2
Controls, Indicators, and Ports
12
CAUTION
If you remove a power supply, it is imperative to wait at least
15 seconds before reinserting it.
The delay gives the power
supply’s inrush protection circuit time to reset itself.
If the
circuit does not have time to reset, the supply draws a larger
than normal inrush current and may trip main circuit breakers
or UPS breakers.
Communication Ports
Figure 2-7 identifies the ports on the HP NetServer’s rear panel.
Keyboard
Mouse
Serial Port B
Serial Port A
LPT1
VGA
USB
Not Used
External
SCSI
Figure 2-7.
Rear Panel Ports
NOTE
The keyboard and mouse ports are interchangeable and at boot
time the I/O Riser board automatically detects which device is
connected to the port. The I/O Riser board, located on the I/O
baseboard behind the rear panel connectors, contains the
electronic circuitry to support all of its connections.