Aruba JL666A — CX 6300F 24×1G PoE+ + 4×SFP56 (25/50G) stackable access switch

What it is: An Aruba CX 6300F Series switch for enterprise access or aggregation. JL666A gives you 24 × 1GbE RJ-45 ports with Class 4 PoE (PoE+) for powered edge devices, plus 4 × SFP56 uplinks that run 1/10/25/50G for fast core links or stacking. Runs AOS-CX, so you get modern automation and telemetry across the CX family.

Why buyers pick JL666A (plain English)

• PoE access made simple: 24 powered ports is the sweet spot for smaller closets and branch floors.

• Fast uplinks without buying bigger gear: SFP56 up to 50G keeps the edge from becoming your choke point.

• Stack it like one switch: VSF stacking means growth feels painless and upgrades are cleaner.

• 6300F value play: you get CX features with a fixed-hardware cost profile (internal PSU/fans).

60-second spec box (JL666A)

Access / downlink ports

• 24 × 10/100/1000Base-T RJ-45

• Class 4 PoE (PoE+), up to 30W/port

• Total PoE budget depends on PSU design and your endpoint plan

Uplinks / stacking

• 4 × SFP56 supporting 1G / 10G / 25G / 50G

• Often used for uplinks and/or VSF stack links

Stacking / HA

• VSF (Virtual Switching Framework), up to 10 members per stack

• Front-plane stacking over SFP56 for high bandwidth

OS & management

• AOS-CX (Network Analytics Engine, REST APIs, automation-first)

• Managed via CLI/Web UI, Aruba Central, telemetry/SNMP

Hardware profile (6300F trait)

• Fixed internal PSU and fans (not hot-swap modular like 6300M)

• Built for reliable wiring-closet duty

Form factor

• 1U rack-mount, fixed depth

Where it fits (and when to choose something else)

• Perfect for:

  • Branch / mid-size access closets needing 24 PoE+ ports

  • AP/phone/camera floors that still want 25/50G uplinks to agg/core

• Choose JL664A if you want the same 24-port layout without PoE.

• Choose JL665A if you want 6300M with hot-swap PSUs/fans.

• Choose JL660A/JL662A if you need Smart Rate mGig + 60W PoE for AP-heavy Wi-Fi 6/7 floors.

TL;DR

JL666A is the CX 6300F “24-port PoE+ closet switch with fast uplinks”: 24×1G PoE+, 4×SFP56 up to 50G, VSF stacking, and AOS-CX analytics/automation — a tidy, modern access pick when you want power + uplink muscle without the modular-hardware price tag.