DGS-3130 Series Layer 3 Stackable Managed Switch Hardware Installation Guide 
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Feature  Description 
•  DEM-436XT-BXU (10GBASE-LR, single-mode, 20 km, TX: 1270 nm / 
RX: 1310 nm, without DDM) 
SFP+ Direct Attached Cables (DAC) Supported: 
•  DEM-CB100S (10G SFP+, 1 m) for stacking or uplink connection 
•  DEM-CB300S (10G SFP+, 3 m) for stacking or uplink connection 
•  DEM-CB700S (10G SFP+, 7 m) for stacking or uplink connection