The 5U 5-slot ATCA backplane is a 3X Replicated Mesh. However, Dual Star, 1X and 2X Meshes can all be implemented across the 5-slot backplane.
Product Features
Compliant to PICMG 3.0 Rev 3.0 specification
Gigabyte/Terabyte per second bandwidth per shelf
Connections to IPM Sentry shelf manager
Controlled impedance stripline design
Mesh Topology (dual star and 1X, 2X, 3X Mesh topologies are implementable)
Pluggable shelf manager slots using MicroTCA.0 connectors (applies to part# 109ATCA505-9020R only)