DIMAX
Dual Speed Hub
ED-1508/ED-1508X
ED-1508S/ED-1508SX
8-Port Desktop
Dual Speed Hub
User ’ s Manual
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This equipment generates and uses radio frequency energy and if not installed
and used properly, that is, in strict accordance with the instructions provided with
the equipment, may cause interference to radio and TV reception. The
equipment has been tested and found to comply with the limits for a Class A
computing device in accordance with the specifications in Subpart B of Part 15
of FCC rules, which are designed to provide reasonable protection against such
interference in a commercial environment. However, there is no guarantee that
interference will not occur in a particular installation.
If you suspect this equipment is causing interference, turn your hub on and off
while your radio or TV is showing interference to determine the source of the
interference.
You can try to correct the interference by one or more of the following measures:
1. Reorient the receiving radio or TV antenna where this may be done safely.
2. To the extent possible, relocate the radio, TV or the other receiver away
from the equipment.
3. Plug the computer which has the equipment installed into a different power
outlet so that equipment and the receiver are on different branch circuits.
If necessary, you should consult the place of purchase or an experienced radio/
television technician for additional suggestion.
CAUTION : The phone jack cannot be connected to telephone system.
FCC COMPLIANCE STATEMENT
Chapter 1 Introduction ....................................1
Chapter 2 Features & Specifications ..............3
Chapter 3 Package Contents ...........................4
Chapter 4 Physical Description .......................5
Chapter 5 Installation ......................................8
Chapter 6 Trouble-shooting ..........................10
Contents
1
1
Introduction
Congratulations on your purchase of Edimax’s 8-port dual-speed hubs. Migrating
from traditional 10Mbps Ethernet to 100Mbps Fast Ethernet is now simple and
affordable with Edimax’s dual-speed hubs. Edimax’s high performance 8-port
desktop 10/100Mbps dual-speed hubs (ED-1508/ED-1508X/ED-1508S/ED-1508SX)
are equipped with 8 RJ45 dual-speed ports and one selectable uplink port using slide
switch.
Typically a dual-speed hub has two independent internal network segments: 10Mbps
segment and 100Mbps segment. Depending on the speed of attached network
devices, each individual port of a dual-speed hub provides Auto-Negotiation
capability which automatically senses and selects optimum speed at 10Mbps or
100Mbps. A 10Mbps network device attached to the dual-speed hub will be able to
communicate with other network devices attached to the hub running at 10Mbps. On
the other hand, a 100Mbps network device attached to the dual-speed hub will be
able to communicate with other devices attached to the hub running at 100Mbps.
Therefore, dual-speed hub can be 10Base-T hub when all the connecting nodes are
running at 10Mbps as illustrated in Figure 1-1, or can be 100Base-TX hub when all
the connecting nodes are running at 100Mbps as illustrated in Figure 1-2. ED-1508
series dual-speed hubs are the ideal hubs for both 10Base-T and 100Base-TX
networks.
* CAUTION: If you connect both 10Mbps network devices and 100Mbps network
devices to ED-1508 and ED-1508S dual-speed hubs, the 10Mbps
devices will not communicate with 100Mbps devices.
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Figure 1-1 10Mbps segment connecting
10Mbps devices
Figure 1-2 100Mbps segment connecting
100Mbps devices
100Mbps10Mbps
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UPLINK
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100M
LNK/ACT
PWR
10
1 2 3 4 5 7 86
100
DIMAX
COL
8-port 10/100Mbps ED-1508
Dual Speed Hub
10M
10M
10M
10M
10M
100Mbps10Mbps
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UPLINK
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100M
LNK/ACT
PWR
10
1 2 3 4 5 7 86
100
DIMAX
COL
8-port 10/100Mbps ED-1508
Dual Speed Hub
100M
100M
100M
100M
100M
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