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Waveshare PoE HAT for Raspberry Pi 4B/3B+, Power Over Ethernet (PoE) Support 802.3af, Compatible with Official Case, Supports Cooling Fan
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Waveshare PoE HAT for Raspberry Pi 4B/3B+

Bottom line: The Waveshare PoE HAT for Raspberry Pi 4B/3B+: 802.3af-compliant PoE delivers 5V/2.5A to a Pi 4B over a single Ethernet run; main trade-off: 2.5A output leaves little headroom for power-hungry USB peripherals.

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By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014, focused on GPU performance across gaming, rendering, and local-LLM inference. Synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides.

Pros & Cons

Pros

  • ✓ 802.3af-compliant PoE delivers 5V/2.5A to a Pi 4B over a single Ethernet run
  • ✓ Fully isolated switched-mode supply separates Pi rails from 37V-57V PoE input
  • ✓ Fits inside the official Raspberry Pi 4 case without modification
  • ✓ Onboard header drives a cooling fan, no separate power feed needed
  • ✓ Compact 65 x 32mm layout clears surrounding GPIO and port space

Cons

  • ✗ 2.5A output leaves little headroom for power-hungry USB peripherals
  • ✗ Only supports 3B+ and 4B, so Pi 5 and older boards are excluded
  • ✗ Requires an 802.3af injector or switch you must supply separately
  • ✗ Fan header specs and included hardware are not listed in the product details

Manufacturer description

About this item Power Over Ethernet HAT for Raspberry Pi 3B+/4B, compatible with official case,support connecting cooling fan. PoE (Power Over Ethernet) capability，IEEE 802.3af-compliant Fully isolated switched-mode power supply (SMPS) Smaller and more flexible with a more compact component layout POE Power Input: 37V~57V DC. POE Power Output: 5V/2.5A DC. Network Standard: 802.3af PoE-compliant. Dimensions: 65.00 × 32.00mm. › See more product details

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SpecPicks Verdict

SpecPicks scored Waveshare PoE HAT for Raspberry Pi 4B/3B+ using a rating × review-volume × price-fit model applied to published specs and reviews across the single board computers category. waveshare's single board computers lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for single board computers of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Key Features

  • Power Over Ethernet HAT for Raspberry Pi 3B+/4B, compatible with official case,support connecting cooling fan.
  • PoE (Power Over Ethernet) capability，IEEE 802.3af-compliant
  • Fully isolated switched-mode power supply (SMPS)
  • Smaller and more flexible with a more compact component layout
  • POE Power Input 37V~57V DC. POE Power Output 5V/2.5A DC. Network Standard 802.3af PoE-compliant. Dimensions 65.00 × 32.00mm.

Full Specifications

ASINB0974TK3KD
Brandwaveshare
Model NamePoE HAT
ManufacturerWaveshare
Model NumberBC-Official POE+ HAT for RPi-C
Built-In MediaPoE HAT (E) for Raspberry Pi 3B+/4B
Mfr Part NumberBC-Official POE+ HAT for RPi-C
Compatible DevicesRaspberry Pi 3B+, Raspberry Pi 4B
Included ComponentsPoE HAT (E) for Raspberry Pi 3B+/4B
RAM Memory TechnologyLPDDR4
Connectivity TechnologyEthernet
Item Dimensions L x W x H2.55"L x 1.25"W x 0.11"H
Full listing titleWaveshare PoE HAT for Raspberry Pi 4B/3B+, Power Over Ethernet (PoE) Support 802.3af, Compatible with Official Case, Supports Cooling Fan

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Waveshare PoE HAT for Raspberry Pi 4B/3B+, Power Over Ethernet (PoE) Support 802.3af, Compatible with Official Case, Supports Cooling Fan is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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Waveshare PoE HAT for Raspberry Pi 4B/3B+, Power Over Ethernet (PoE) Support 802.3af, Compatible with Official Case, Supports Cooling Fan
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