Siemens SCALANCE XR-300M Compact Operating Instructions page 35

Desktop operation (only 24 VDC variants with adhesive feet)
Check the rack device (R) you are installing; for example
that the two mounting brackets are fitted at the front and
that the ventilation grilles are free.
CAUTION: If you install a rack device (R) with compo‐
nents inserted.
The locking mechanisms of components installed in the
rack device (R) (for example the handles of media mod‐
ules or the clips on the SFP) must be closed.
See also installation of modular devices:
- Installing media modules in a slot
- Installing an SFP in an SFP media module.
4. Turn the rack device (R) over and fit the four adhesive feet
on the base.
5. Fit the connectors for the 24 V power supply.
6. Fit the remaining connectors, for example the signaling
contact.
Removal
Removing from the rack
1. Turn off the power supply for the SCALANCE XR-300M.
2. Disconnect all cables for data traffic and the connectors for the power supply and the grounding cable.
3. Undo the screws on the mounting bracket and remove the rack device (R) from the 19" cabinet.
If necessary, release the locking mechanisms of components inserted in the rack device (R) (for example handles on
the media module or clips on the SFP) to be able to remove the media modules (MM900) or the transceiver (SFP).
SCALANCE XR-300M
Compact Operating Instructions, 11/2019, A5E02661171-15
Mounting
5.3 19" rack mounting
35