Alfa Dual Speed Hub ADH24SB User Manual
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Introduction
Congratulations on your purchase of this rackmount stackable dual-speed
hub. Migrating from traditional 10Mbps Ethernet to 100Mbps Fast
Ethernet is now simple and affordable with these dual-speed hubs. These
high performance 16-port, 24-Port, 32-port 10/100Mbps stackable dual-
speed hubs are equipped with 16, 24, 32 RJ45 dual-speed ports, one uplink
port and one internal 2-port switch.
hub. Migrating from traditional 10Mbps Ethernet to 100Mbps Fast
Ethernet is now simple and affordable with these dual-speed hubs. These
high performance 16-port, 24-Port, 32-port 10/100Mbps stackable dual-
speed hubs are equipped with 16, 24, 32 RJ45 dual-speed ports, one uplink
port and one internal 2-port 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. These stackable dual-speed hubs are the ideal
hubs for both 10Base-T and 100Base-TX networks.
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. These stackable dual-speed hubs are the ideal
hubs for both 10Base-T and 100Base-TX networks.
100Mbps
10Mbps
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Uplink
LNK/ACT
100M
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Power
Switch
10M
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100M
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24-Port
10/100Mbps
Dual Speed Stackable Ethernet Hub
with Internal Switch
100Mbps
100Mbps
10Mbps
10Mbps
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Uplink
LNK/ACT
100M
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Power
Switch
10M
COL
COL
50+
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UTIL
%
100M
COL
COL
50+
30
10
5
3
1
UTIL
%
24-Port
10/100Mbps
Dual Speed Stackable Ethernet Hub
with Internal Switch
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Figure 1-1 10Mbps segment connecting
10Mbps devices
Figure 1-2 100Mbps segment connecting
100Mbps devices
10Mbps
10Mbps
10Mbps
10Mbps
100Mbps
100Mbps
100Mbps
100Mbps