S3K91A HPE 24p 10/100/1000BASE-T 4p SFP+ 1G/10G 1-slot TAA Managed Switch

High-Density Rack-Mount Managed L2/L3 Ethernet Switching with the S3K91A for Campus and Top-of-Rack

The S3K91A is an HPE Comware 5520 HI Series rack-mount managed switch engineered for enterprise access and aggregation where predictable latency, segmentation, and operational control are mandatory. Built for 1GbE edge connectivity with 10GbE uplinks, it aligns with campus and branch designs as well as top-of-rack server access, delivering a balanced port mix and a control plane suited to multi-service networks.

With 24 x 10/100/1000BASE-T RJ45 and 4 x 1/10GbE SFP+, the S3K91A supports deterministic uplink design for virtualization clusters, storage-adjacent networks, and routed access. Comware L2/L3 capabilities enable VLAN-based isolation, QoS policy enforcement, and resilient pathing using MSTP and LACP (802.3ad), while BFD improves failure detection for routed adjacencies. Telemetry and traffic visibility are strengthened through sFlow, enabling operations teams to correlate congestion and application behavior without intrusive packet capture. For scale-out growth, stacking up to 9 units simplifies management domains and supports consistent policy deployment across closets or racks.

Why Choose the S3K91A?

The S3K91A provides a strong density-to-control ratio for standardized enterprise switching, combining access ports, 10GbE uplinks, and Comware operational consistency in a 19-inch full-width form factor. Dual internal redundant PSUs (1+1) and active cooling support continuous service expectations, while front-access console and management interfaces streamline provisioning and incident response in constrained wiring closets and data centre racks.

HPE designs the Comware 5520 HI platform around deterministic forwarding, robust feature parity across deployments, and lifecycle stability for governed enterprise environments. The S3K91A fits modern operational standards through structured management access, stack-based scalability, and resilient switching primitives that integrate cleanly into segmented, policy-driven network architectures.

Key Applications:

• Campus access switching
• Branch aggregation
• Top-of-rack 1GbE server access with 10GbE uplinks
• VLAN segmentation and QoS enforcement
• Network telemetry and traffic visibility

At Happyware - Server Hardware you benefit from non-binding offers tailored precisely to your deployment plan for the S3K91A, and you can extend the warranty up to 6 years to align support coverage with enterprise refresh cycles.