3Com 100 TX User Manual page 12

1-2 C 1: I
HAPTER NTRODUCTION
100BASE-TX
1x 2x 3x 4x 5x 6x
RJ-45 ports
Figure 1-1 Front Panel of LinkBuilder FMS 100-TX Hub
Each port (including the thirteenth port) is supplied with three LEDs that
provide activity, link, and partition status information. Additional LEDs
provide repeater classification, environmental, and port status information.
(Refer to Chapter 3 for the interpretation of LEDs.)
The hub's rear panel (Figure 1-2) has a slot for a 3Com transceiver interface
module, which (as the thirteenth port) provides media flexibility and
accessibility to the hub. This slot can also be left empty, if desired, with no
connection (no module attached).
Two types of transceiver interface modules are available and must be
purchased separately:
100BASE-TX Category 5 UTP module (3C252-TX)
100BASE-FX Fiber module (3C262-FX)
Additional modules may be supported in the future.
REFER TO
3Com Corporation
INSTRUCTION MANUAL
!
Santa Clara, CA
FOR CORRECT
®
SELECTION OF Made in USA DC INPUT
POWER CORD
CAUTION: For continued
protection against risk of fire
use only with same type
and rating of anti-serge fuse.
INPUT
V 5 +12 –12
A max 5.0 2.5 0.2
AC power cord socket
Fuse compartment
Figure 1-2 Rear Panel of LinkBuilder FMS 100-TX Hub
ACTIVITY
7x 8x 9x 10x 11x 12x
LINK
PARTITION
UP
D E
DOWN
DC input Power-up
connector disabled
option switch
STATUS UNIT 3C250-TX/
FAN FAIL CLSII
OVERTEMP CLSI
COLLISION PWR
1 2 3 4 5 6 7 8 9 10 11 12 13
Hub
Port LEDs
operation
LEDs
Unit digital
display
EXPANSION
Expansion Transceiver
connectors interface
module port
LinkBuilder FMS 100
100BASE-TX Hub
®