Intel 140T User Manual

Intel® Express 140T
Standalone Hub

Quick Start and User Guide

Year 2000 Capable

An Intel product, when used in accordance with its associated documentation, is “Year 2000 Capable” when,
upon installation, it accurately stores, displays, processes, provides, and/or receives date data from, into, and
between the twentieth and twenty-first centuries, including leap year calculations, provided that all other
technology used in combination with said product properly exchanges date data with it.

Copyright © 1998, Intel Corporation. All rights reserved.
Intel Corporation, 5200 NE Elam Young Parkway, Hillsboro OR 97124-6497

Intel Corporation assumes no responsibility for errors or omissions in this manual. Nor does Intel make any commitment to update the
information contained herein.

* Other product and corporate names may be trademarks of other companies and are used only for explanation and

to the owners’ benefit, without intent to infringe.

First Edition September 1998 722791-001

Contents

Quick Start 2
User Guide 3

Overview ..............................................................................................3

Understanding 140T Hubs....................................................................4

Port LEDs ...................................................................................... 4

Hub LEDs......................................................................................5

Connecting to Devices..........................................................................6

Connection Guidelines ..................................................................6

Bridging Segments ........................................................................6

Daisy-chaining Hubs .....................................................................7

Cabling Devices....................................................................................8

Media Requirements .....................................................................8

Straight-through vs. Crossover Cables..........................................8

T esting Cables ...............................................................................8

Troubleshooting....................................................................................10

Regulatory Information ........................................................................11

W arnings...............................................................................................12

Limited Hardware Warranty .................................................................15

Intel Customer Support................................................Inside Back Cover

1

Quick Start

Install the Hub

1

• Remove the hub and parts from the box.

• Attach the enclosed brackets if you plan
to mount the hub in a rack.

• Install the Intel® Express 140T
Standalone Hub in a rack or on a shelf.

• Plug in the power cord.

Connect

2

the Devices

• All ports automatically detect the speed
of the device connected to them.

• Connect PCs and print servers to the hub
with straight-through cables.

• Use a crossover cable to connect a hub to
another hub or switch.

• Use a straight-through cable to connect to
another hub or switch when using the
daisy-chain port.

• Use only CAT 5 UTP to connect
100Mbps devices. To connect 10Mbps
devices, use CAT 3, 4, or 5 UTP.

Rack: Use the four
small screws to attach
the brackets to the hub.

®

Intel

Express 140T

Standalone Hub

P

ow

er

Collisions

10Mbps

1

100Mbps

2

P
or

t

3

Activity

45

13

14

6

15 16

78

17

9

18

1

10

19 20

2

P
or

t

i

Speed

13

R

1

11

3

12

21

45

22

14

15

10Mbps

510

Solid g

23

6

reen = Link

24

78

16

17

18

19 20

30

40

Traffic %

50+

1

or

Blinking g

reen = Activity

9

Or

ange = A

10

11

21

22

23

100Mbps

510

30

40

1

utodisabled

12

Solid Green = 100Mbps

24

Off = 10Mbps

50+

2

3

Daisy-chain

4

5

6

7

8

MDI

13 14

15

16

9

10

11

17 18

19

12

20

21

22 23 24

Class

I
I

Shelf: Peel off the protective
backing and attach the rubber
feet to the hub.

From To

straight-through

10/100

Hub PC/Server

10/100

Hub Print Server

crossover

10/100

Hub Hub or Switch

10/100

Hub Hub or Switch

not using the hub’s daisy-chain port

straight-through

using the hub’s daisy-chain port

10/100

Top Row – Port Activity

Check the

3

Connections

• Check the port LEDs (located to the left
of the ports) to confirm the link status. A
solid LED indicates a valid link. A
blinking LED indicates port activity.

• The bottom two rows indicate port speed.

Solid Green = Link
Blinking = Activity
Orange = Autodisabled

Intel® Express 140T
Standalone Hub

R

i

Power

12345

Port

9101112

Activity

123456

Port

9101112

Speed

1 5 10 30 40 50+

Bottom Row – Port Speed

10Mbps

10Mbps

13

13 14

Traff

1234

9101112

56

13 14

Solid Green = 100Mbps
Off = 10Mbps

2

User Guide - Overview

Features

This guide covers both the 16- and 24-port versions of the Express 140T
Standalone Hub.

16-port 140T Hub (Product Code EE140TX16)

Intel® Express 140T
Standalone Hub

R

i

Activity

Speed

Collisions

Power

10Mbps 100Mbps

12345678

Port

9101112

13 14 15 16

12345678

Port

9101112

13 14 15 16

10Mbps

or

Solid green = Link
Blinking green = Activity
Orange = Autodisabled

Solid Green = 100Mbps
Off = 10Mbps

100Mbps

Traffic %

1 5 10 30 40 50+1 5 10 30 40 50+

Daisy-chain

MDI

1234

9101112

5678

13 14 15 16

II

Class

Port LEDs

Ports

24-port 140T Hub (Product Code EE140TX24)

Intel® Express 140T
Standalone Hub

i

Activity

Speed

R

Utilization

LEDs

• Autosenses speed—10Mbps or 100Mbps

Collisions

Power

10Mbps 100Mbps

123456789101112

Port

13 14 15 16 17 18 19 20 21 22 23 24

123456789101112

Port

13 14 15 16 17 18 19 20 21 22 23 24

10Mbps

100Mbps

Traffic %

1 5 10 30 40 50+1 5 10 30 40 50+

Solid green = Link
Blinking green = Activity
Orange = Autodisabled

Solid Green = 100Mbps
Off = 10Mbps

or

Daisy-chain

MDI

Daisy-chain port

per port.

56781234

17 18192013 14 15 16

Fan AC

Power

Plug

9101112

21 22 23 24

• Automatically bridges 10Mbps and 100Mbps segments.

• Can be daisy-chained with another 140T hub (or any ClassII hub) to expand port
density (maximum of two hubs).

AC LINE
100-240 VAC
50-60 Hz

1.5A MAX.

50W

II

Class

3

Understanding 140T Hubs

Port LEDs

On the 140T, the port LEDs are located on a common panel with the hub
LEDs. These LEDs indicate port status, individual port speed, and port
activity.

Top rows:
Port Activity

Bottom rows:
Port Speed

12345678

Port

9101112

Activity

12345678

Port

9101112

Speed

13 14 15 16

13 14 15 16

Solid green = Link
Blinking green = Activity
Orange = Autodisabled

Solid Green = 100Mbps
Off = 10Mbps

LED Status Meaning

Port Activity Solid green Device linked.

Blinking green Receiving activity on that port.
Blinking orange Port auto-disabled (partitioned). See below.
Off No link detected.

Port Speed Solid green Device connected at 100Mbps

Off Device connected at 10Mbps.

Partitioned ports

A port is automatically disabled (partitioned) by the hub when an invalid
condition occurs, such as too many consecutive collisions.

Once the hub is able to transmit data to the port collision free, the hub
automatically re-enables (unpartitions) the port. Clients are usually not
affected by a partitioned port because the port is often unpartitioned very
quickly.

Usually , a partitioned port indicates an overloaded network or a
malfunctioning device (like an adapter card) on the network. To alleviate an
overloaded network, divide the network into smaller segments so that fewer
devices share the same fixed amount of bandwidth.

4

Hub LEDs

The 140T hub LEDs are located above and below the port LEDs. These
LEDs indicate the condition of the power supply, collisions per segment,
and the amount of traffic per segment.

Intel® Express 140T
Standalone Hub

i

R

Power

12345678

Port

9101112

Activity

12345678

Port

9101112

Speed

10Mbps

Collisions

10Mbps 100Mbps

13 14 15 16

13 14 15 16

Traffic %

Solid green = Link
Blinking green = Activity
Orange = Autodisabled

Solid Green = 100Mbps
Off = 10Mbps

100Mbps

1 5 10 30 40 50+1 5 10 30 40 50+

LED Status Meaning

Power On Hub is receiving power.

Off Hub is not receiving power.

Collisions 10Mbps Blinking Collisions detected on 10Mbps segment.
Collisions 100Mbps Blinking Collisions detected on 100Mbps segment.

Traf fic% (1-50+) On Gives an approximation of the traffic in

the 10Mbps or 100Mbps segments.

Off No network traffic on segment.

Segment Traffic

The traffic bar graphs (located below the port LEDs) provide a quick
reference on the current traffic load relative to the total available 10Mbps or
100Mbps network bandwidth. The graphs display a measure of the
percentage of bandwidth used on the respective network segment. Typically ,
a segment showing more than 30% utilization indicates an overloaded
network.

The traffic percentage is determined by counting all data packets, whether
the packets are valid or not.

5

Connecting to Devices

Connection Guidelines

General

• The 140T is capable of autonegotiating port speed and can operate at
10Mbps or 100Mbps per port. The hub matches the highest possible
speed of an attached device.

• The ports on the 140T hub are half-duplex. The hub cannot connect
to a device at full-duplex.

• T o prevent a loop in the network, do not connect the 140T to 10Mbps
and 100Mbps segments simultaneously if the 10Mbps and 100Mbps
segments are bridged externally (through a switch).

Cabling

• Use Category 5 unshielded twisted-pair (CAT 5 UTP) cable when
connecting 100Mbps devices to the hub.

• Use Category 3, 4, or 5 unshielded twisted-pair (CAT 3, 4, 5 UTP)
cable when connecting 10Mbps devices to the hub.

• Limit the cable length between devices to 100 meters.

• Use crossover cables or the daisy-chain port to connect to a hub
or switch.

• Use a straight-through cable to connect the hub to a server or
workstation. For more information on cabling, see pages 8-9.

Bridging Segments

A bridge allows two segments to communicate with each other. Typically, a
bridge connects segments operating at different speeds. The 140T contains
an internal bridge that automatically allows devices operating at 10Mbps to
communicate with devices operating at 100Mbps.

Collisions

Intel® Express 140T

Power

10Mbps 100Mbps

Standalone Hub

12345678

Port

9101112

13 14 15 16

Activity

12345678

Port

9101112

13 14 15 16

Speed

10Mbps

R

i

Traffic %

10 and
100Mbps
Clients

10Mbps

100Mbps

10Mbps Hub

10

10Mbps
Clients

6

or

5678

Solid green = Link
Blinking green = Activity
Orange = Autodisabled

Solid Green = 100Mbps
Off = 10Mbps

1 5 10 30 40 50+1 5 10 30 40 50+

1234

Daisy-chain

100Mbps

MDI

9101112

13 14 15 16

II

Class

Server

Shared
Printer