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10/100 Fast Ethernet
Dual Speed Hub
Installation Manual
DH5102E
DH8100E
DH16100E
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Introduction
The StarTech.com Dual Speed Fast Ethernet desktop hubs are
small in size but big in value. They provide 2 powerful modes of
operation: dual speed mode, or extension mode. Extension mode
allows the hub to cascade from up to 100m away, breaking the
standard 10m hub distance limit of 100BaseT Ethernet. Each port
has 2 LED indicators that show the link speed and activity for
quick and easy monitoring.
Features
1. Consists of 1 internal 10Mbps Ethernet segment and 1 internal
100Mbps Fast Ethernet segment.
2. Supports auto-negotiation RJ45 ports which automatically sense
and select optimum speed and route data traffic to
corresponding internal segments.
3. Built in uplink port to connect with regular straight-through
cable to connect to another hub.
4. Built in internal switching function automatically switches data
traffic between devices running at different speed, as well as
establishes communications between ports running at 10Mbps
and 100Mbps.
5. Provides 1 Extension port that can be linked to another Fast
Ethernet hub up to 100 meters.
6. Wall mountable.
7. 2-year warranty.
Specifications
Standards IEEE 802.3, IEEE 802.3u
Connectors RJ45
Dimensions 5 port: 127 x 83 x 30 mm / 5.0 x 3.27 x 1.18 in.
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8 port: 187 x 100 x 30 mm / 7.4 x 3.94 x 1.18 in.
16 port: 290 x 100 x 30 mm / 11.4 x 3.94 x 1.18 in.
Weight: 5 port: 180g / 0.40lb.
8 port: 370g / 0.81lb.
16 port: 480g / 1.16lb.
Operating
Humidity 10~95% (non-condensing)
Package Contents
1 x Fast Ethernet Switch
1 x external power adapter
LED
Installation
1. Connect a Category 5 patch cable to the RJ45 jack on your
computer’s network card. (The RJ45 jack looks like an overÂsized phone jack).
StatusLED Description Number of LED
PWR
(Power)
COL
Power is supplied
No Power
One for the
whole Hub
One for 10Mbps
segment and one
for 100Mbps
One for each port
One for each port
Collision detected in this segment
No Collision
A valid link is established
Data packets received
No link is established
Port is running at 100Mbps
Not connected or running at 10Mbps
Lit
Off
Lit
Off
Lit
Flash
Off
Lit
Off
LNK/ACT
(Link/Activity)
COL/FDX
(Collision/Full Duplex)
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2. Connect the other end of the cable to a numbered port on the
hub (not to the uplink port).
3. Once the network cable is connected to both ends and the
attached network device is powered on, the green LNK/ACT
LED light should be lit.
4. Repeat these steps for the remainder of the computers you
would like to network.
An uplink port is used to connect to another hub/switch using
regulat straight-through UTP cable.
Troubleshooting
1. Power LED is not lit
Check if the power cord is properly connected to the external
power adapter and the power outlet. Make sure the DC power
jack is firmly plugged into the power socket of the switch.
2. Link Status LED is not lit
Check the power switch of the devices connected to the hub;
make sure they are turned ON. Check the network cables; make
sure they are properly connected to the hub and the
network devices.
Check the network cables; make sure the cables comply with
EIA/TIA 568 specifications. Use straight-through Category 5
cables for 100Mbps connection and Category 3 or higher cables
for 10Mbps connection.
3. Collision LED flashes constantly
Remove all the network cables; connect the cables back one by
one to isolate the source of the collision.
Check the network cable, inferior cable quality will result in
excessive collision and error packets.
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