Aruba JL357A 2540 48P PoE Switch 4 SFP Ports Managed

Aruba JL357A is a 2540-series, 48-port PoE+ Gigabit switch with four 1/10 GbE SFP+ uplinks, designed for campus-edge deployments. It provides up to 370W PoE budget to power IP phones, cameras, and wireless access points, and offers enterprise-class management in a compact 1U form factor. The switch features 48 RJ-45 PoE+ ports (10/100/1000 Mbps) and four SFP+ uplink ports, a 1U chassis measuring 17.42 in (W) x 11.98 in (D) x 1.73 in (H) (44.25 x 30.42 x 4.39 cm) and weighing 9.83 lb (4.46 kg). Inside, you’ll find a dual-core ARM Cortex‑A9 processor at 1016 MHz, 1 GB DDR3 RAM, a 12.38 MB packet buffer, and 4 GB of eMMC storage. Throughput reaches up to 112 Mpps, with latency under 3.8 µs for 64-byte packets at 1 Gbps and under 1.6 µs at 10 Gbps, making it suitable for demanding access-layer workloads. This managed switch operates at Layer 2 with basic Layer 3 features, enabling VLANs, policy enforcement, and PoE-enabled device provisioning in small-to-medium networks.