In summary, the Ultra Hard Metric (UHM) connector from 3M offers a direct way to improve the performance of legacy and new systems built in accordance with PICMG CompactPCI® standards. Its full shielding provides the lowest crosstalk for a high signal density 2mm Hard Metric connector, while its controlled impedance characteristics offers performance in excess of 7Gbps. UHM connectors are intermateable with both legacy and new equipment built with connectors meeting IEC 61076-4-101. Being footprint compatible with existing PCB layouts, UHM connectors are drop-in replacements for standard 2mm HM sockets. For these reasons, UHM socket from 3M is defined in draft PICMG CompactPCI® standard 2.30 for the J2 connector.