JL484A - Aruba 25G SFP28 LC SR 100m MMF Transceiver

Aruba JL484A — 25G SFP28 LC SR 100m MMF Transceiver

What it is

JL484A is an Aruba/HPE 25GbE SFP28 optical transceiver.
It’s the standard 25GBASE-SR (short-reach) module for multimode fiber, used to light up 25G SFP28 ports on Aruba CX switches and compatible HPE platforms. Think “default 25G SR optic for inside the building / rack-to-rack.”

Why buyers pick JL484A (plain English)

• Simple, standard 25G fiber uplinks
  The go-to optic for short-range 25Gb links in closets and data centers.

• Cost-effective 25G over multimode
  Uses OM3/OM4 MMF you likely already have for short runs.

• First-party Aruba/HPE coding
  Clean compatibility and support with Aruba CX switching.

• Optical health visibility
  Digital diagnostics let you read Tx/Rx power levels on the switch.

60-second spec box (JL484A)

Form factor

• SFP28 (25GbE)

Type / standard

• 25GBASE-SR (Short Reach)

Fiber / connector

• Multimode fiber (MMF)

• Duplex LC

Wavelength

• 850 nm

Max distance (typical)

• Up to 70 m on OM3 MMF

• Up to 100 m on OM4 MMF

Diagnostics

• DOM/DDM supported

Use case

• 25G switch-to-switch or switch-to-server links over multimode fiber

Where it fits (and when to choose something else)

Perfect for:

• Data center and campus 25G SR uplinks

• TOR-to-spine / access-to-aggregation over OM3/OM4

• Short in-building fiber runs needing 25Gb bandwidth

Choose something else if:

• You need longer reach → use 25GBASE-LR (single-mode, km-class)

• You’re only going a few meters in-rack → SFP28 DAC/AOC is cheaper

TL;DR

JL484A is the Aruba 25G SFP28 SR multimode optic:
850nm, duplex-LC, ~70m on OM3 / ~100m on OM4 — the standard short-reach 25Gb transceiver for Aruba CX networks.