The HPE Aruba Networking R0X43A is a high-performance expansion module designed exclusively for the Aruba CX 6400 Switch Series. Engineered for enterprise campus and data center aggregation layers, this module provides high-density fiber connectivity to support bandwidth-intensive applications and growing network demands. It features twenty-four 10 Gigabit Ethernet SFP+ ports for versatile downlink connectivity and four high-speed 50 Gigabit Ethernet SFP56 uplink ports, enabling scalable non-blocking performance. By integrating with the AOS-CX operating system, this line card supports advanced automation, distributed analytics, and high availability through the Virtual Switching Extension (VSX). It is an essential component for IT teams looking to future-proof their infrastructure with flexible, wire-speed switching and simplified management.