Siemens SCALANCE X-400 Compact Operating Instructions page 23

8. Using a slotted screwdriver with a 2.8 mm wide blade, tighten the two captive slug screws
9. Fit the CV490 4x100 cover to slot 11 of the basic device and slots 12 and 13 of the
Figure 4-2
SCALANCE X-400 extender modules
Compact Operating Instructions, 04/2013, A5E00367421-10
4.2 Installing/uninstalling the EM495-8 twisted pair extender for SCALANCE X414-3E
on slot 11. The screws lock the two guide bolts, so do not use excessive force when
tightening them.
twisted pair extender.
Installing the twisted pair extender on the 35 mm DIN rail
Assembly
23