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HPE Aruba PoE midspan injector for AP22 access points

HPE

HPE R8W31A 15.40 W PoE Midspan wireless accessory

SKU CH-5EK2-M65PH MPN R8W31A

15.40 W PoE midspan powers Aruba Instant On AP22 access points via IEEE 802.3af

  • Delivers 15.40 W to compatible devices via PoE
  • Powers Aruba Instant On AP22 access points reliably
  • Meets IEEE 802.3af standard for interoperability
  • Single-port midspan adds PoE to non-PoE switches
  • Ready to deploy with Aruba Instant On ecosystem

Aruba Instant On PoE Midspan

The HPE R8W31A midspan injector delivers up to 15.40 W of Power over Ethernet to compatible access points. It connects between a standard network switch and the powered device. The unit is designed specifically for Aruba Instant On AP22 indoor access points. Installation requires only a network cable and a power outlet.

IEEE 802.3af power budget

The injector complies with the IEEE 802.3af standard, limiting output to 15.40 W at the source. Cable resistance reduces the power available at the access point over longer runs. Devices requiring higher wattage or the 802.3at standard will not operate from this unit. The single port supplies one access point only.

Check switch ports and cabling

Verify that your network switch port does not already provide PoE, as parallel power sources can cause conflicts. Ensure the Ethernet cable run to the access point stays within standard distance limits for reliable power delivery. Confirm the AP22 model matches the compatibility listing before ordering. The midspan requires an available AC socket near the switch.

How it compares

Measured against everything we stock in Patch Panels, PoE & LAN Adapters, at today’s prices. Recalculated every night.

Price $33.99
Cheaper than about 67% of the 559 comparable items (median $56.99).

Specifications

Size & build
Shipping weight0.45 kg
Package size142 × 51 × 33 mm

Questions about this item

Which capacity should I choose for my Aruba Instant On AP22 access point?

The midspan delivers 15.40 W maximum output, matching the IEEE 802.3af limit that the AP22 requires.

What does the 15.40 W rating mean once the unit is installed?

It supplies up to 15.40 W to a single connected access point over the Ethernet cable, powering the AP22 without a local power outlet.

What does the IEEE 802.3af standard cap in practice?

The standard limits power delivery to 15.40 W per port, so this midspan cannot power devices that need higher PoE+ or PoE++ levels.

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