Specifications

Description
3.3 System description of SCALANCE X-400
SCALANCE X-400 BA
Operating Instructions, 03/2009, C79000-G8976-C186-07
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Component Function Figure
Media module
100 Mbps
Expands the basic device
by two Fast Ethernet
fiber-optic ports.
P2
MM 492-2
FO 2 x 1000
P1
MM491-2, MM491-2LD
(as of product version ES04),
MM491-2LH+
Only for SCALANCE X414-3E
Twisted pair extender
Expands the basic device
by eight Fast Ethernet
ports with RJ-45
jacks.
EM495-8
Only for SCALANCE X414-3E
Media module extender
Expands the basic device
by four slots for
Fast Ethernet media modules.
EM496-4
3.3.2 Ports of SCALANCE X-400
Ports
IE Switches X-400 provide you with electrical ports that can be used as gigabit and ring
ports. The expansion with media modules provides you with additional optical ports.
By using an extender module, you can increase the number of ports on the
SCALANCE X414-3E by a maximum of eight ports.
3.3.2.1 10Base-T / 100Base-TX
Transmission rate
The transmission rate of the electrical ports is 10 Mbps or as Fast Ethernet ports 100 Mbps.
Transmission mode
The transmission mode for 10Base-T / 100Base-TX is specified in the IEEE 802.3i / IEEE
802.3u standards of the Institute of Electrical and Electronic Engineers.
Autonegotiation (automatic detection of the best transmission modes) is default. The order in
which they are selected is: