5.5 Inserting media modules and SFP transceivers
5.5.1 Installation and removal of media modules
Connecting media modules and SFP transceivers
WARNING
Install and remove media modules only when the power is off
Media modules may only be inserted in or removed from a SCALANCE device when the
power supply to the device has been turned off.
Use only approved media modules
Use only "MM900" media modules in the module slots of SCALANCE devices.
CAUTION
Remember the orientation of media modules
On modular devices, there are always two module slots arranged opposite each other.
Remember the correct orientation when installing MM900 media modules.
Example:
● The first MM900 media module is installed in slot 3.
● The second MM900 media module installed in slot 4 must be turned through 180 degrees.
On modular devices for rack mounting, pairs of module slots are located one above the other
in which modules can be inserted in a specific order:
Example of a rack device:
● The first MM900 media module is installed in slot 1.
● The second MM900 media module installed in slot 7 must be turned through 180 degrees.
Other modules are then inserted in slots 2 and 8 or 3 and 9 etc.
The permitted operating temperature is decided by the fully equipped device (switch + media
module + SFP transceiver).
With modular devices, it is not only the switch that decides the permitted operating
temperature of the overall device but also the temperature ranges of the MM900 media
modules and the SFP transceivers. You will find details in the technical specifications of the
relevant components.
The following aspects can restrict the maximum permitted operating temperature:
● The orientation of the carrier device.
● The use of SFP transceivers.
● The use of transceivers of the types LH, LH+ or ELH.
Installation
5.5 Inserting media modules and SFP transceivers
SCALANCE X-300
Operating Instructions, 11/2019, A5E01113043-24 113
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