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HPE Aruba JL557A 2930F 48-port PoE+ switch with four SFP uplinks

HPE Aruba Networking

HPE Aruba Networking JL557A 2930F 48G PoE+ 4SFP 740W network switch

SKU CH-RKXT-BYMMT MPN JL557A

A 48-port Gigabit switch with four SFP uplinks and 740 W PoE+ budget for powering access points and cameras

  • 48 Gigabit ports connect many wired devices
  • 4 SFP/SFP+ uplinks add high-speed fibre links
  • PoE+ powers phones, cameras and access points
  • 740 W budget feeds all powered ports
  • Stacking support simplifies multi-switch management

Aruba 2930M 48-port PoE+ switch

The HPE Aruba Networking JL557A is a 48-port Gigabit Ethernet switch that delivers PoE+ power to attached devices. It belongs to the Aruba 2930M Series and includes four SFP/SFP+ uplink ports for flexible aggregation. The unit ships new and is built for enterprise environments that need both data and power over a single cable.

Who this suits and who it does not

This switch fits networks that must power IP phones, wireless access points or cameras through the Ethernet infrastructure. It also serves teams that want stacking capability to manage several units as one logical device. Buyers who need more than 48 copper ports or require higher-density 10 GbE uplinks should evaluate other models.

The spec that decides fit

The 740 W PoE+ budget determines how many powered devices can run simultaneously at full 30 W each. Calculate the total draw of your endpoints against that figure before committing to this switch.

Highlights

  • 48 Gigabit ports connect many wired devices
  • 4 SFP/SFP+ uplinks add high-speed fibre links
  • PoE+ powers phones, cameras and access points
  • 740 W budget feeds all powered ports
  • Stacking support simplifies multi-switch management

Specifications

No published specifications for this item yet.

Questions about this item

Will the PoE+ budget of 740W need to be upgraded if I add more powered devices?

The 740W PoE+ budget is fixed by the internal power supply; adding devices that exceed this limit will require a second switch or an external injector.

What throughput ceiling appears first when all 48 ports run at 1000 Mbps continuously?

The 48 Gigabit ports share the switch fabric, so sustained line-rate traffic on every port will saturate the internal backplane before any single port hits its limit.

How loud do the fans get and how much heat does the unit produce when PoE load approaches 740W all day?

Under maximum PoE load the fans spin faster to exhaust the extra heat, raising audible noise and chassis temperature noticeably compared with light-load operation.

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