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Getting to Know the
10/100 Workgroup Hubs
• One EtherFast 10/100 Workgroup Hub (EFAH16W v2 shown)
• One AC Adapter
• User Guide and Registration Card
PWR The Power LED will illuminate when the the hub is receiv-
ing power.
100 The 100 LED will illuminate if the port is operating at
(per port) 100Mbps. The LED will be off if the port is running at
10Mbps.
Link/Act The Link/Act LED will illuminate if the port has an
(per port) active network connection. The LED will flicker if the port
is receiving or sending data.
10/100 Workgroup Hubs
3
Instant EtherFast
®
Series
As the demand for desktop video, multimedia development, imaging, and
other speed-intensive applications continues to rise, the need for high per-
formance, fault tolerant LAN technology will become more critical.
Standard Ethernet, which has been the most popular networking technology
to date with a maximum data throughput of 10 Megabits per second, is
becoming insufficient to handle the latest video, multimedia, and other speed-
intensive client/server LAN applications.
Among the solutions to the problem of network speed, Fast Ethernet has
emerged as the most viable and economical. Capable of sending and receiv-
ing data at 100 Megabits per second, it is more than fast enough to handle
even the most demanding video and other real-time applications.
Although there are a number of different competing Fast Ethernet implemen-
tations, 100BaseTX is by far the most popular. Operating on two pairs of
UTP Category 5 unshielded twisted-pair cabling, 100BaseTX supports high
speed signaling and is relatively inexpensive. Because it uses four wires for
data transmission and the same packet format, packet length, error control,
and management information as 10BaseT.
This backward compatibility is one of 100BaseTX's major advantages over
other forms of Fast Ethernet; it allows critical, speed-dependent network seg-
ments to be upgraded to 100BaseTX speeds as needed without re-wiring,
refitting, and retraining an entire site. Networks can now mix both slow and
fast network segments for different users or departments. Publishing, R&D,
video, multimedia, or accounting departments can enjoy a 100Mbps pace,
while other corporate segments can operate at slower and more affordable
10Mbps speeds.
Every port on your 10/100 Workgroup Hub is capable of running at either
10Mbps or 100Mbps, allowing you to mix and match economical 10BaseT
hardware with high performance 100Mbps network cards, hubs, switches, and
other equipment.
2
About Fast Ethernet
LEDs
Package Contents
(EFAH05W v2 shown)