CAUTION
Use only approved modules in the slots
Possible module connection types:
● 2 x RJ-45
● 2 x FX100
● 2 x FX1000
● or 2 x SFP slots
With FX, single mode fibers or multimode fibers are possible.
Connecting end devices or other network segments does not depend on the module slots.
Slot number S1 S2
Port number P1 P2 P3 P4 P5 P6 P7 P8 P1 P2 P1 P2
Slot number S3 S4
Port number P9 P10 P11 P12 P13 P14 P15 P16 P1 P2 P1 P2
Connection
type
Electrical: Gigabit Ethernet Connection type depend‐
ing on module used
4.4.8 MM900 media modules
4.4.8.1 MM991-2 (BFOC) product characteristics
Possible attachments
The MM991-2 (BFOC) media module has the following:
● 2 x 100 Mbps, BFOC port optical (multimode, glass) up to max. 5 km
Figure 4-26 MM991-2 (BFOC) [9912AB]
[Device labeling in square brackets]
Description of the device
4.4 Product properties and device views
SCALANCE X-300
Operating Instructions, 11/2019, A5E01113043-24 75
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