Siemens SCALANCE X308-2M Operating Instructions Manual page 22

Introduction
2.2 Product overview
If information applies to all devices, the term "IE Switches X-300" is used. If information
applies to only a particular product group, the relevant names will be used without extra
information on the type or number of interfaces. Examples: "X-300" stands for non-modular
devices with a compact housing, "XR-300" means all rack devices, "X-300M" means all
modular devices etc.
Note
SCALANCE X320-3LD FE
The SCALANCE X320-3LD FE deviates from the type designation in that it has an SC port
for multimode fiber-optic cable up to a maximum of 5 km in length and two SC ports for
single mode fiber-optic cable up to a maximum of 26 km in length.
• Port 21: Multimode
• Port 22: LD (long distance, single mode)
• Port 23: LD (long distance, single mode)
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Operating Instructions, 02/2012, A5E01113043-12
SCALANCE X-300