AdvancedMC carriers are plug-in units that are slotted into an AdvancedTCA system. They contain the carrier board that accepts AdvancedMC modules. Electrical connection to the AdvancedTCA backplane is via connectors. With the fully-assembled AdvancedMC carrier in place, costeffective additional functions may be integrated into the system. The standard, in accordance with PICMG specification AMC.0 R2.0, defines three different mechanical versions.