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Daisy-chaining Hubs
Normally, to make a hub-to-hub connection you need to use a crossover
cable. The daisy-chain port on the 140T hub is wired MDI so you can use a
straight-through cable to connect the 140T to an MDI-X port on a hub or
switch. When using the daisy-chain port, follow these guidelines:
• Only two hubs (ClassII) can be daisy-chained together.
• The maximum cable length connecting the hubs can’t exceed 5 meters.
205m (max)
5m (max)100m (max) 100m (max)
i
R
100Mbps
Daisy-chain
MDI
1510304050+1510304050+
Traffic %
10Mbps
Power 10Mbps100Mbps
Collisions
or
Port
Activity
Port
Speed
Intel
®
Express 140T
Standalone Hub
Solid green = Link
Blinking green = Activity
Orange = Autodisabled
Solid Green = 100Mbps
Off = 10Mbps
Class
II
910
11
12
5678
13 14 1516
12
3
4
9101112
9101112
12345678
13141516
12345678
13141516
i
R
100Mbps
Daisy-chain
MDI
1510304050+1510304050+
Traffic %
10Mbps
Power 10Mbps100Mbps
Collisions
or
Class
II
Port
Activity
Port
Speed
Solid green = Link
Blinking green = Activity
Orange = Autodisabled
Solid Green = 100Mbps
Off = 10Mbps
Intel
®
Express 140T
Standalone Hub
567812
3
4
17 18
19
2013 14 1516
123456789101112
131415161718192021222324
123456789101112
131415161718192021222324
910
11
12
21 22 2324
• Use a straight-through cable to connect from the daisy-chain port on
one hub to any port on the other hub (except the daisy-chain port).
• Don’t connect daisy-chain ports together with a straight-through cable.
• Never daisy-chain a 140T hub with a 100Base-T Class I device (such as
the Express 200 Series Stackable Hubs).
Intel Express 220T
Stackable Hub
Class I
12345678 1718192021222324910111213141516
Managed
Bridged
StatusRPS
Power
Colls 100Mbps
Colls 10Mbps
Enable/Disable
Bridging
123456789101112
Intel Express 220T
Stackable Hub
ClassI
Left (Orange/Green)
Orange = 10Mbps
Green = 100Mbps
Solid = Link
Blink = Activity
Right (Yellow)
Solid = Disabled
Blink = Wrong Speed
Left (Orange/Green)
Orange = 10Mbps
Green = 100Mbps
Solid = Link
Blink = Activity
Right (Yellow)
Solid = Disabled
Blink = Wrong Speed
Managed
Bridged
StatusRPS
Power
Colls 100Mbps
Colls 10Mbps
Enable/Disable
Bridging
i
R
100Mbps
Daisy-chain
MDI
1510304050+1510304050+
Traffic %
10Mbps
Power 10Mbps100Mbps
Collisions
or
Class
II
Port
Activity
Port
Speed
Solid green = Link
Blinking green = Activity
Orange = Autodisabled
Solid Green = 100Mbps
Off = 10Mbps
Intel
®
Express 140T
Standalone Hub
567812
3
4
1718
19
2013141516
123456789101112
131415161718192021222324
123456789101112
131415161718192021222324
910
11
12
21222324
Daisy-chain Port
Do not use Port 1 and the Daisy-chain port at the same time. Port 1 and
the daisy-chain port are the same logical port, except their pinouts are
different.
It is also possible to connect from a daisy-chain port on a 140T to a daisy-
chain port on another 140T. However, because the daisy-chain ports are
wired the same (MDI) you will need to use a crossover cable just as if you
were connecting two MDI-X ports together.