Acer 528B, 528T User Manual
AcerHub 528B/528T
10Mbps Ethernet Hub
The 8-port 10Base-T & 1-port 10Base2 Ethernet hub
User's Guide
Federal Communications Commission Statement
This equipment generates, uses, and can radiate radio frequency
energy and, if not installed and used in accordance with the instructions,
may cause harmful interference to radio communications. This
equipment has been tested and found to comply with the limits for a
class A computing device, pursuant to Part 15 of the FCC rules. These
limits are designed to provide reasonable protection against harmful
interference when operated in a commercial environment. Operation of
this equipment in a residential area is likely to cause interference, in
which case the user, at his own expense, will be required to take
whatever measures are necessary to correct the interference.
CE Declaration of conformity :
This equipment complies with the requirements relating to
electromagnetic compatibility, EN 55022 class A for ITE and EN 500821, the essential protection requirements of Council Directive 89/336/EEC
on the approximation of the laws of the Member States relating to
electromagnetic compatibility.
Introduction
This series products are compact size 10Mbps Ethernet hubs,
there are two models In this series:
AcerHub 528B: 8-port 10Base-T (RT-45 connectors) and
1-port 10Base2 (BNC connector).
Model number is ALH-528B.
AcerHub 528T: 8-port 10Base-T (RT-45 connectors).
Model number is ALH-528T.
Note: The model name / model number is shown on the label
at the bottom side of the hub.
This user guide describes the features, installation and operating
instructions of this mini hub.
Package Contents
The AcerHub 528B/528T package contains the following items:
• One AcerHub 528B or 528T Hub
• One AC Power Adapter, output is DC 7.5V, 1000mA
• One BNC T-Connector (only for AcerHub 528B)
• This User’s Guide
• Four Pieces of Rubber Foot
• Two Pieces of Tapping Screw
• Two Pieces of Nylon Screw Anchor
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Features of AcerHub 528B/528T
• Comply with IEEE 802.3 Ethernet 10BASE-T and 10BASE2 standards
• Compact size for desktop or wall mounting
• Plug and play, no configuration required
• 8 10Base-T (RJ-45) normal port for connection to workstations
• 1 uplink port for easy expanding to another hub or LAN switch
• 1 BNC port for trunk connection
• Per port Link and Partition LEDs for easy diagnostics
The AcerHub 528 Front Panel
The following diagram illustrates the front panel of AcerHub 528. To distinguish model 528B or 528T, please see the label on the bottom side of
the hub.
1. PWR, the power (Green) Indicator
When the power LED is lit it indicates that the hub’s power is on.
2. Collision (ORANGE) Indicator
This LED indicator blinks when the hub detects a collision on the
network.
3. Link (GREEN) Indicators
These LEDs indicate the state of the data link of each port. The
LED will be
“ON” when the connection of that port is successful, and the LED
will be blinking when data is being received at that port.
4. Partition (ORANGE) Indicators
The LEDs will be “ON” when ports on the hub are been partitioned.
A port is partitioned if it experiences consecutive collisions. The
partitioned port is automatically isolated by the hub. The port will be
automatically recovered when the faulty condition disappeared.
When the port recovers, the partition LED returns to normal status
(“OFF”).
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