U90A1111001 is a QSFP (Quad Small Form-Factor Pluggable) cage assembly designed to house high-speed optical transceivers. The assembly features a copper alloy cage with nickel plating (3.81 µm minimum) and EMI springs, combined with a steel alloy heat sink clip and aluminum heat sink for thermal management. The product is compliant with QSFP transceiver specification revision 1.0 and offers multiple configuration options including heat sink heights of 4.2 mm (PCI height), 6.5 mm (SAN height), or 13.5 mm (tall), with optional nickel-plated or hard-coat anodized finishes. The cage accommodates pin length of 2.50 mm and is available with or without heat sink assemblies, with optional dust cover protection. This connector is ideal for data center, telecommunications, and high-speed networking equipment requiring reliable optical signal transmission and thermal management.