2299940-4 is a zQSFP+ cage assembly with integrated connector designed for high-speed pluggable I/O applications. This stacked cage configuration features a 2x1 port matrix with 76 positions, supporting data rates up to 25 Gb/s with a 0.8mm centerline pitch. The assembly includes a fin-style heat sink with anodized black finish for thermal management, and utilizes gold-plated contact mating areas with through-hole press-fit PCB termination. Operating over a temperature range of -40°C to +85°C, it features internal/external EMI springs for electromagnetic interference containment. This thermally enhanced connector is ideal for high-speed networking equipment, data center infrastructure, and telecommunications applications requiring reliable signal transmission.