ENH924-AUT
24-Port Fast Ethernet Switch
User Guide
FCC Certifications
This Equipment has been tested and found to comply with the
limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These
limits are designed to provide reasonable protection against harmful interference
when the equipment is operated in a commercial environment. This equipment
generates, uses, and can radiate radio frequency energy and, if not installed and
used in accordance with the instruction manual, may cause harmful interference
to radio communications.
Operation of this equipment in a residential area is likely to cause harmful
interference in which case the user will be required to correct the interference at
his own expense.
This device complies with Part 15 of the FCC Rules. Operation is subject to the
following two conditions: (1) this device may not cause harmful interference, and
(2) this device must accept any interference received; including interference that
may cause undesired operation.
CE Mark Warning
This equipment complies with the requirements relating to
electromagnetic compatibility, EN 55022 class A for ITE, the essential protection
requirement of Council Directive 89/336/EEC on the approximation of the laws of
the Member States relating to electromagnetic compatibility.
Company has an on-going policy of upgrading its products and it may be
possible that information in this document is not up-to-date. Please check with
your local distributors for the latest information.
No part of this document can be copied or reproduced in any form without written
consent from the company.
Trademarks:
All trade names and trademarks are the properties of their respective
companies.
Copyright © 2009, All Rights Reserved.
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1. Unpacking Information
The device is a powerful, high-performance Fast Ethernet switch, with all 24
ports capable of 10 or 100Mbps auto-negotiation operation (NWay), which
means the switch could automatically negotiate with the connected partners on
the network speed and duplex mode. It is ideal for micro-segmenting large
networks into smaller, connected subnets for improved performance, enabling
the bandwidth demanding multimedia and imaging applications. Moreover, the
10/100Mbps auto-sensing ability provides an easy way to migrate 10Mbps to
100Mbps network with no pain. Compared to the shared 10Mbps or 100Mbp s
networks, the switch delivers a dedicated 10/100Mbps connection to every
attached client with no bandwidth congestion issue. This switch also supports
auto MDI / MDI-X function. Each port could be used to connect to another switch
or hub with no crossover RJ-45 cable.
Store-and-forward switching mode promises the low latency plus eliminates all
the network errors, including runt and CRC error packets. To work under
full-duplex mode, transmission and reception of the frames can occur
simultaneously without causing collisions as well as double the network
bandwidth.
The switch is plug-n-play without any software to configure and also fully
compliant with all kinds of network protocols. Moreover, the rich diagnostic LEDs
on the front-panel can provide the operating status of individual port and whole
system.
Before you start to install the switch, check the following contents in this
package：
● One 24-Port Fast Ethernet Switch
● One Power cord
● User’s manual
● Rack-mount brackets and screws (optional)
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2. LED Definition
Please refer to the following table for LED definition
LED Status Operation
24 Ports 19-inch Model
Power
Link/Act
Steady Green Power is on
Off Power is off
Steady Green The port is connected
Blinking Green The port is transmitting/receiving
data.
Off No connection
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3. Station Connection
Connect each station to the switch by twisted-pair cable. Plug one RJ-45
connector into a RJ-45 port of the switch, and plug the other RJ-45 connector
into the station’s network adapter. Power on the switch and then system is
ready.
For cable selection, refer to the following table.
4.
Station Connection
In making a switch interconnection, you could use any port to connect another
switch with straight or crossover cable. As all the ports support auto MDI / MDI-X
function, using a straight cable to make a switch-to-switch connection is allowed.
For cable selection, refer to the following table：
Network Speed Cable Type Max. Length
10Mbps
100Mbps
Rack-Mount
The switch may standalone, or may be mounted in a standard 19-inch
equipment rack. Rack mounting produces an orderly installation when you have
a number of related network devices.
The switch is supplied with two optional rack mounting brackets and screws.
These are used for rack mounting the unit.
5.
Cat. 3, 4, 5 UTP/STP 100 meters
Cat. 5 UTP/STP
Network Application
100 meters
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6. Specification
IEEE 802.3 10BASE-T
Standard
Interface
Uplink
Network Speed
MAC Address Table
Memory
Power Supply
EMI
IEEE 802.3u 100BASE-TX
IEEE 802.3x full duplex operation
and flow control
24 10/100Mbps RJ-45 Fast Ethernet
Ports
Auto MDI/MDI-X（Auto crossover）
10/100Mbps & Full/Half duplex mode
auto detection
8K MAC entries
156Kbytes
Internal Power supply
3.3V 4A (100-240V/ 50-60Hz)
CE and FCC class A
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