Compaq HB1004 - Manual (Page 8)

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Compaq HB1004 10Base-T Hub User Guide
Writer: Weldon W. Rowan Project: Overview Comments:
File Name:SAB_1.DOC Last Saved On:7/2/98 8:29 AM
Hub Components
This section provides an overview of the Compaq HB1004 hub’s components
including the LED indicators, RJ-45 ports, and the serial COM port. Figure 1-1
shows the hub’s front panel.
Figure 1-1 Compaq HB1004 10Base-T Ethernet Hub Front Panel
RJ-45 Ports
The hub’s four RJ-45 ports allow connections to workstations and servers in a
10Base-T network via UTP cabling. When the MDI/MDI-X slide switch on the
front panel of the hub is set to MDI, Port 4 uses the MDI pinout and can be
used for a 10Base-T uplink. When the switch is set to MDI-X, Port 4 uses the
MDI-X pinout and can be connected directly to a network interface card (NIC).
Serial COM Port
The HB1004 hub contains a serial COM port that uses a male DB9 connector
with a standard AT pinout. You can use this port to connect to a workstation
for out-of-band communication using the Compaq HB1004 System
Configuration Program.
LED Indicators
The LED panel of the hub helps you monitor the hub’s operation. When you
power on the hub, it performs a power-on self test (POST) which lasts a few
seconds. After the POST, all LEDs reflect the current operational modes
described in Table 1-1.