HM2R65PA5100N9LF is a Millipacs® 5-row Type AB Right Angle Receptacle (RAR) connector designed for high-speed board-to-board and cable-to-board backplane interconnection in hard metric (HM) configuration. This rear-plug-up, non-shielded receptacle features 125 positions with a 50 mm module length and guiding pegs, providing mating compatibility with IEC 61076-4-101 series 2mm hard metric vertical headers. The connector operates over a temperature range of -55°C to +125°C with a current rating of 1.5A at 20°C and 1.0A at 70°C, contact resistance of 20 mO maximum, and a voltage rating of 750 Vrms. It is extensively used in communications, data, medical, and industrial instrumentation applications where cost-effectiveness, standardization, and broad connector availability are essential for chassis-based packaging and backplane systems.