JL557A - Aruba 2930F 48G PoE+ 4SFP 740W Switch

Aruba JL557A — 2930F 48×1G PoE+ access with 4×1G SFP uplinks (740W)

What it is

An Aruba 2930F Series access switch built for campus, SMB, and enterprise edge networks that want solid L3 access with Aruba’s proven ProVision feature set.
JL557A is the 48-port PoE+ model with 1G uplinks: 48 × 1GbE RJ-45 PoE+ downlinks for powered edge devices, plus 4 × 1G SFP uplink ports for fiber (or copper SFP) connections to aggregation/core. It’s a high-density PoE access switch when 1G uplinks are enough.

Why buyers pick JL557A (plain English)

• Full 48-port PoE+ without overpaying for 10G uplinks
  Ideal when your uplink layer is still 1G or the switch is doing access-only duties.

• Big PoE budget for real closets
  740W PoE pool handles APs, phones, cameras, and IoT at scale.

• ProVision/2930F maturity
  Long-proven Aruba access platform with strong security, QoS, and edge L3.

• Simple, reliable access workhorse
  Built for “install it, power devices, and let it run.”

60-second spec box (JL557A)

Access / downlink ports

• 48 × 10/100/1000Base-T RJ-45 with PoE+ (802.3at)

Uplinks

• 4 × 1G SFP

PoE

• Total PoE budget: 740W

• Up to 30W per port (budget-limited)

Switching / performance

• Switching capacity: ~104 Gbps class

• Forwarding: ~77.4 Mpps class (line-rate)

OS & management

• Aruba ProVision (2930F software)

• Managed via CLI / Web UI / Aruba Central / AirWave / SNMP

Layer / features

• Advanced L2 + L3 access (static routing + dynamic routing), ACLs, QoS, sFlow, IPv6

Stacking

• VSF stacking supported (up to 8 members)

Form factor

• 1U rack-mount, fixed PSU/fans

Where it fits (and when to choose something else)

Perfect for:

• Campus/branch access closets needing lots of PoE+ ports

• Wi-Fi AP and VoIP heavy environments

• Sites where 1G SFP uplinks are sufficient

Choose something else if:

• You need 10G uplinks → JL558A (4× SFP+ 10G)

• You don’t need PoE → the non-PoE 2930F 48G model

• You want AOS-CX operations / newer CX platform → CX 6100/6200

TL;DR

JL557A is the 2930F “48-port gigabit PoE+ edge with 1G SFP uplinks” switch:
48×1G PoE+ downlinks, 4×1G SFP uplinks, ProVision L3 access features, and a strong 740W PoE budget for busy access closets.