Juniper EX4300 EX-UM-2QSFP 2-Port 40G QSFP+ Uplink Module | Enterprise

Add 40 GbE uplink capacity to a Juniper EX4300 deployment with the EX-UM-2QSFP module. With 2 QSFP+ ports, this uplink option is designed for networks that have outgrown 10 GbE aggregation and need a straightforward way to move more traffic toward the core. This module is a practical upgrade for teams extending the life of an EX4300 platform. Rather than replacing the switch, you add uplink bandwidth where congestion typically appears first: at the aggregation point. That makes it a strong fit for campus access layers, edge closets, and distribution designs where server, storage, or east-west traffic is increasing. For infrastructure leaders, the appeal is architectural discipline. You preserve the existing switching investment while improving upstream throughput and keeping the network design consistent. For procurement, it is a targeted capacity purchase that addresses a specific bottleneck instead of funding a broader refresh. When the goal is to move traffic faster without changing the switching platform, this uplink module does exactly that.