Model EN104/EN108/EN116 Ethernet Hub Installation Guide
Set the Normal/Uplink Push Button
If you are connecting to port 4 on the Model EN104 hub, port 8 on the Model EN108 hub, or port
16 on the Model EN116 hub, use the following table. Determine the type of cable to use and how
to set the Normal/Uplink push button.
Cascade the Hub
The following illustration shows cascading hubs together in a hierarchical star through
the10BASE-T ports and indicates the setting of the Normal/Uplink push button on each hub.
Connecting Port
on the Hub Connecting Device Cable Used
Model EN104 hub:
Ports 1–3 PC, server, or router Straight-throu gh cable
Ports 1–3 Hub or switch Crossover cable
Model EN108 hub:
Ports 1–7 PC, server, or router Straight-through cable
Ports 1–7 Hub or switch Crossover cable
Model EN116 hub:
Ports 1–15 PC, ser ver, or router Straight-through cable
Ports 1–15 Hub or switch Crossover cable
Connecting Port Connecting Device Cable Used
Port 4, port 8, or port 16
set to Normal PC, server, or router Straight -through cable
Port 4, port 8, or port 16
set to Uplink Hub or switch Straight-through c able
Note: Ethernet specifications limit th e number of hubs with tw isted pair links in any
communication path to five, as shown in the example. When PC “A” communicates
with PC “B,” the communication path goes from hub 4 to hub 2, to hub 1, to hub3,
and then to hub 5 (or five paths).
12345678
Pwr
Col
EN116
10 BASE-T HUB
12345678
LINK Rx
12345678
Pwr
Col
EN108TP
10 BASE-T HUB
12345678
Pwr
Col
EN108TP
10 BASE-T HUB
8735FA
AB
Model EN108 hub
Model EN104 hub Model EN104 hub
Model EN116 hub
Model EN108 hub
Uplink
Normal
UplinkUplink
Uplink