Black Box LE2650A, LE2650AE, Personal MiniHub User Manual

CUSTOMER

SUPPORT

INFORMATION

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Mail order: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018
Web site: www.blackbox.com • E-mail: [e-mail]

JUNE 2001

LE2650A

LE2650AE

Personal MiniHub

10BASE-T

12V

#AUI

PARALLELPARALLEL

RX

LINK

PORT

Personal MiniHub

1

2

3

4

PORT 5

PWR

RX

LINK

UP LINK

1

PERSONAL MINIHUB

FEDERAL COMMUNICATIONS COMMISSION

RADIO FREQUENCY INTERFERENCE STATEMENT

This equipment generates, uses, and can radiate radio frequency energy
and if not installed and used properly, that is, in strict accordance with the
manufacturer’s instructions, may cause interference to radio communication.
It has been tested and found to comply with the limits for a Class A
computing device in accordance with the specifications in Subpart J of
Part 15 of FCC rules, which are designed to provide reasonable protection
against such interference when the equipment is 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 may be necessary to correct the interference.

Changes or modifications not expressly approved by the party responsible
for compliance could void the user’s authority to operate the equipment.

This digital apparatus does not exceed the Class A limits for Radio noise emission from
digital apparatus set out in the Radio Interference Regulation of Industry Canada.

Le présent appareil numérique n’émet pas de bruits radioélectriques dépassant les limites
applicables aux appareils numériques de la classe A prescrites dans le Règlement sur le
brouillage radioélectrique édicté par Industrie Canada.

TRADEMARKS

UL®is a registered trademark of Underwriters Laboratories, Incorporated.

Velcro®is a registered trademark of Velcro USA, Inc.

Any other trademarks mentioned in this manual are acknowledged to be the property
of the trademark owners.

2

PERSONAL MINIHUB

Contents

Chapter Page

1. Specifications ..................................................................................................3

2. Introduction....................................................................................................4

2.1 Inspecting the Package and Product ...................................................4

2.2 Description ............................................................................................4

2.3 Features and Benefits............................................................................7

2.4 Applications...........................................................................................8

3. Installation.....................................................................................................10

3.1 Table-Top or Shelf Mounting ............................................................12

3.2 Wall (or Vertical Surface) Mounting .................................................12

3.3 Twisted Pair Segment Connection.....................................................14

3.4 Up-Link Option on Port #5 (Up-Link Switch)..................................15

4. Operation ......................................................................................................17

5. Troubleshooting ...........................................................................................18

5.1 Before Calling for Assistance..............................................................18

5.2 When Calling for Assistance...............................................................19

5.3 Return Material Authorization (RMA) Procedure ...........................19

5.4 Shipping and Packaging Information................................................20

3

CHAPTER 1: Specifications

1. Specifications

Network Standards — Ethernet

V2.0, IEEE 802.3: 10BASE-T
(the Hub is a physical-layer
standard Ethernet product and
operates independently of all
software)

Operating Environment — Ambient
Temperature: 32 to 122° F (0 to

50° C); Storage Temperature: -4
to 140° F (-20 to 60° C)

Power — LE2650A: 115 VAC,

60 Hz power supply,, UL®listed,
CSA certified; LE2650AE:
230 VAC, 50 Hz power supply,
UL®listed, CSA certified, TUV
and GS approved

Size — 0.8"H x 3.3"W x 4.8"D

(2 x 8.4 x 12.2 cm)

Weight — Hub: 0.8 lb. (0.4 kg);

Power supply: 1 lb. (0.5 kg)

Standards — IEEE 802.3 Ethernet

Connectors — (5) RJ-45 female:

(4) station ports, (1) switch­selectable uplink/station port

Indicators — (11) LEDs: (5) LINK,

(5) RX, (1) PWR

Switches — (1) uplink switch on side

of unit

Performance — Data Rate: 10 Mbps,

Partitioning: Enforced after 32
consecutive collisions;
Reconnect: Occurs after 512
bits error-free transmission

Maximum Ethernet Segment
Lengths — UTP (Unshielded

10BASE-T): 328 ft. (100 m);
STP (Shielded 10BASE-T):
492 ft. (150 m)

4

PERSONAL MINIHUB

2. Introduction

2.2 Description

The Personal MiniHub is a five-port
10BASE-T workplace hub in a very
compact package. It can expand
a “power user’s” existing single
network port to provide up to three
extra ports in the immediate office
or lab area. It is simple to install and
use in an office or lab environment,
requiring no special rack cabinets
or wiring-closet apparatus. The
MiniHub is a standard physical-layer
Ethernet product and operates
independently of all software.

The Personal MiniHub is also well­suited for small-to-medium sized
office or lab environments (two
to four persons) that need an
independent Ethernet network.
Small independent networks built
using the Hub are easily expanded
by cascading hubs of equal or
greater capacity. See Section 3.4 for
more about the Up-Link switched­port feature.

2.1 Inspecting the Package and
Product

Examine the shipping container for
obvious damage before installing
this product; notify the carrier of any
damage that you believe occurred
during shipment or delivery. Inspect
the contents of this package for any
signs of damage and make sure that
the items listed below are included:

• Personal MiniHub

• External power supply, either
115 VAC, 60 Hz (LE2650A) or
230 VAC, 50 Hz (LE2650AE)

• (1) Velcro®tape section,
approximately 3 inches long

• (2) Rackmount brackets and
screws

• This User’s Guide

Remove the Personal MiniHub
from the shipping container. Be sure
to keep the shipping container in
case you need to ship the unit at a
later date.

If any items are missing or
damaged, contact Black Box.

5

CHAPTER 2: Introduction

The Personal MiniHub’s small
size makes it very useful for demon­stration situations in conference
rooms and in exhibitions where

a temporary network or network
expansion is needed. The Personal
MiniHub takes up minimal space
and uses minimal power, and is
rugged enough to be carried in a
coat pocket.

The Personal MiniHub fits easily
into the workplace environment. It
ican be mounted on a tabletop or
shelf, or, with the included Velcro

®

strip, on a wall surface, or on the
back or side of a desk or cabinet. All
of the wiring connectors are in the
same place, so that wiring space is
neat and minimal. The external
power supply conveniently plugs
into an available AC wall receptacle
or power strip.

10BASE-T

12V

#AUI

PARALLELPARALLEL

RX

LINK

PORT

Personal MiniHub

1

2

3

4

PORT 5

PWR

RX

LINK

UP LINK

Fig. 2-1. Personal MiniHub.

Fig. 2-3. Top View—Personal MiniHub.

6

PERSONAL MINIHUB

1234

Fig. 2-2. RJ-45 10BASE-T Ports.

10BASE-T

12V

#AUI

PARALLELPARALLEL

Personal MiniHub

1

2

3

4

1RX

LINK

PORT

PORT 5

PWR

RX

LINK

UP LINK

The Personal MiniHub includes
Link and RX LEDs for each RJ-45
port, and one LED for power,
located near the external power
supply. Since each LED is near the
port it monitors, it is easy to
associate the status LED for each of
the ports with the appropriate port.