{"id":9154803990765,"title":"POE HAT (B) for Raspberry Pi 4B\/3B+,Power Over Ethernet HAT with 0.91\" OLED,Support 802.3af PoE Network,802.3af Power-Sourcing Equipment Required","handle":"poe-hat-b-for-raspberry-pi-4b-3b-power-over-ethernet-hat-with-0-91-oled-support-802-3af-poe-network-802-3af-power-sourcing-equipment-required","description":"\u003ch3\u003ePOE HAT (B) for Raspberry Pi 4B\/3B+,Power Over Ethernet HAT with 0.91\" OLED,Support 802.3af PoE Network,802.3af Power-Sourcing Equipment Required\u003c\/h3\u003e\n\u003cp id=\"b\"\u003eOverview The PoE HAT (B) is a 802.3af-compliant Power Over Ethernet accessory\nfor the Raspberry Pi 3B+\/4B. By using this small HAT and some proper 802.3af-\ncompliant power sourcing equipment, it is possible to provide both network\nconnection and power supply for your Raspberry Pi in only one Ethernet cable.\nFeatures Standard Raspberry Pi 40PIN GPIO header, supports Raspberry Pi 3B+\/4B\nPoE (Power Over Ethernet) capability，802.3af-compliant Fully isolated\nswitched-mode power supply (SMPS) 0.91\"OLED, for monitoring processor\ntemperature, IP address, and fan status in real-time Onboard cooling fan,\nallows auto running on powerup OR programmable control, configured by switch\nIntegrates PCF8574 IO expander for I2C bus, providing pin P0 for directly fan\ncontrol, and more spare IO pins Main Features 1. For use with Raspberry Pi\n3B+\/4B----Standard Raspberry Pi 40PIN GPIO stackable header, allows connecting\nother HATs 2. Power Over Ethernet---providing both network connection and\npower supply for your Raspberry Pi in one cable 3. 0.91\" OLED display---128 ×\n32 pixels, I2C-bus controlled. Monitoring processor temperature, IP address,\nfan status in real-time 4.Cooling fan---allows auto running on powerup OR\nprogrammable control, configured by switch. automatically turn on\/off\ndepending on the Raspberry Pi processor temperature. 5. Onboard PCF8574 chip\n---PCF8574 IO expander for I2C bus, providing 8 IO pins, of which P0 for fan\ncontrol and extra spare pins on solder pads (P1-P7, INT) Specifications PoE\nPower input: 37V ~ 57V DC in PoE Power output: 5V 2.5A DC out Network\nstandard: 802.3af PoE Dimensions: 56.5mm x 65mm OLED size: 0.91inch OLED\npixels: 128x32 OLED driver: SSD1306 OLED display color: White Resources\/User\nManual: \/\/bit.ly\/3DJ2P2C Package Content 1. PoE HAT (B) x1 2. Standoffs pack\nx1\u003c\/p\u003e \n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n \u003cul class=\"a\"\u003e\n \u003cli\u003ePOE HAT (B) for Raspberry Pi 4B\/3B+,Power Over Ethernet HAT,Support 802.3af PoE Network,802.3af Power-Sourcing Equipment Required\u003c\/li\u003e\n \u003cli\u003eIntegrates PCF8574 IO expander for I2C bus, providing pin P0 for directly fan control, and more spare IO pins\u003c\/li\u003e\n \u003cli\u003e0.91\" OLED, for monitoring processor temperature, IP address, and fan status in real-time; Onboard cooling fan, allows auto running on powerup OR programmable control, configured by switch\u003c\/li\u003e\n \u003cli\u003ePOE POWER INPUT:37V ~ 57V DC in. OLED SIZE:0.91\". POE POWER OUTPUT:5V 2.5A DC out .\u003c\/li\u003e\n \u003cli\u003eOLED PIXELS:12832. NETWORK STANDARD:802.3af PoE. OLED DRIVER:SSD1306. DIMENSIONS:56.5 65mm . OLED DISPLAY COLOR:white.\u003c\/li\u003e\n \u003c\/ul\u003e","published_at":"2025-10-24T10:32:09+11:00","created_at":"2025-10-24T10:32:06+11:00","vendor":"waveshare","type":"Single Board Computers","tags":["electronics_selected_Oct2025","weight_unknown"],"price":22900,"price_min":22900,"price_max":22900,"available":true,"price_varies":false,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":48915373883629,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"B07Z1Y47C7","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"POE HAT (B) for Raspberry Pi 4B\/3B+,Power Over Ethernet HAT with 0.91\" OLED,Support 802.3af PoE Network,802.3af Power-Sourcing Equipment Required","public_title":null,"options":["Default Title"],"price":22900,"weight":0,"compare_at_price":null,"inventory_management":"shopify","barcode":"778365986672","requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}}],"images":["\/\/leoforward.com\/cdn\/shop\/files\/B07Z1Y47C7.jpg?v=1775799183","\/\/leoforward.com\/cdn\/shop\/files\/81abqjgM4-L.jpg?v=1761262328","\/\/leoforward.com\/cdn\/shop\/files\/81jy1PwQsnL.jpg?v=1761262328","\/\/leoforward.com\/cdn\/shop\/files\/81iU3H9OfML.jpg?v=1761262328","\/\/leoforward.com\/cdn\/shop\/files\/81xnjlp-4ZL.jpg?v=1761262328","\/\/leoforward.com\/cdn\/shop\/files\/717CvNAYnZL.jpg?v=1761262328"],"featured_image":"\/\/leoforward.com\/cdn\/shop\/files\/B07Z1Y47C7.jpg?v=1775799183","options":["Title"],"media":[{"alt":null,"id":36968948236525,"position":1,"preview_image":{"aspect_ratio":1.25,"height":1601,"width":2002,"src":"\/\/leoforward.com\/cdn\/shop\/files\/B07Z1Y47C7.jpg?v=1775799183"},"aspect_ratio":1.25,"height":1601,"media_type":"image","src":"\/\/leoforward.com\/cdn\/shop\/files\/B07Z1Y47C7.jpg?v=1775799183","width":2002},{"alt":null,"id":36968948269293,"position":2,"preview_image":{"aspect_ratio":1.334,"height":1080,"width":1441,"src":"\/\/leoforward.com\/cdn\/shop\/files\/81abqjgM4-L.jpg?v=1761262328"},"aspect_ratio":1.334,"height":1080,"media_type":"image","src":"\/\/leoforward.com\/cdn\/shop\/files\/81abqjgM4-L.jpg?v=1761262328","width":1441},{"alt":null,"id":36968948302061,"position":3,"preview_image":{"aspect_ratio":2.286,"height":1080,"width":2469,"src":"\/\/leoforward.com\/cdn\/shop\/files\/81jy1PwQsnL.jpg?v=1761262328"},"aspect_ratio":2.286,"height":1080,"media_type":"image","src":"\/\/leoforward.com\/cdn\/shop\/files\/81jy1PwQsnL.jpg?v=1761262328","width":2469},{"alt":null,"id":36968948334829,"position":4,"preview_image":{"aspect_ratio":2.133,"height":1080,"width":2304,"src":"\/\/leoforward.com\/cdn\/shop\/files\/81iU3H9OfML.jpg?v=1761262328"},"aspect_ratio":2.133,"height":1080,"media_type":"image","src":"\/\/leoforward.com\/cdn\/shop\/files\/81iU3H9OfML.jpg?v=1761262328","width":2304},{"alt":null,"id":36968948367597,"position":5,"preview_image":{"aspect_ratio":1.778,"height":1080,"width":1920,"src":"\/\/leoforward.com\/cdn\/shop\/files\/81xnjlp-4ZL.jpg?v=1761262328"},"aspect_ratio":1.778,"height":1080,"media_type":"image","src":"\/\/leoforward.com\/cdn\/shop\/files\/81xnjlp-4ZL.jpg?v=1761262328","width":1920},{"alt":null,"id":36968948400365,"position":6,"preview_image":{"aspect_ratio":2.286,"height":1080,"width":2469,"src":"\/\/leoforward.com\/cdn\/shop\/files\/717CvNAYnZL.jpg?v=1761262328"},"aspect_ratio":2.286,"height":1080,"media_type":"image","src":"\/\/leoforward.com\/cdn\/shop\/files\/717CvNAYnZL.jpg?v=1761262328","width":2469}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch3\u003ePOE HAT (B) for Raspberry Pi 4B\/3B+,Power Over Ethernet HAT with 0.91\" OLED,Support 802.3af PoE Network,802.3af Power-Sourcing Equipment Required\u003c\/h3\u003e\n\u003cp id=\"b\"\u003eOverview The PoE HAT (B) is a 802.3af-compliant Power Over Ethernet accessory\nfor the Raspberry Pi 3B+\/4B. By using this small HAT and some proper 802.3af-\ncompliant power sourcing equipment, it is possible to provide both network\nconnection and power supply for your Raspberry Pi in only one Ethernet cable.\nFeatures Standard Raspberry Pi 40PIN GPIO header, supports Raspberry Pi 3B+\/4B\nPoE (Power Over Ethernet) capability，802.3af-compliant Fully isolated\nswitched-mode power supply (SMPS) 0.91\"OLED, for monitoring processor\ntemperature, IP address, and fan status in real-time Onboard cooling fan,\nallows auto running on powerup OR programmable control, configured by switch\nIntegrates PCF8574 IO expander for I2C bus, providing pin P0 for directly fan\ncontrol, and more spare IO pins Main Features 1. For use with Raspberry Pi\n3B+\/4B----Standard Raspberry Pi 40PIN GPIO stackable header, allows connecting\nother HATs 2. Power Over Ethernet---providing both network connection and\npower supply for your Raspberry Pi in one cable 3. 0.91\" OLED display---128 ×\n32 pixels, I2C-bus controlled. Monitoring processor temperature, IP address,\nfan status in real-time 4.Cooling fan---allows auto running on powerup OR\nprogrammable control, configured by switch. automatically turn on\/off\ndepending on the Raspberry Pi processor temperature. 5. Onboard PCF8574 chip\n---PCF8574 IO expander for I2C bus, providing 8 IO pins, of which P0 for fan\ncontrol and extra spare pins on solder pads (P1-P7, INT) Specifications PoE\nPower input: 37V ~ 57V DC in PoE Power output: 5V 2.5A DC out Network\nstandard: 802.3af PoE Dimensions: 56.5mm x 65mm OLED size: 0.91inch OLED\npixels: 128x32 OLED driver: SSD1306 OLED display color: White Resources\/User\nManual: \/\/bit.ly\/3DJ2P2C Package Content 1. PoE HAT (B) x1 2. Standoffs pack\nx1\u003c\/p\u003e \n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n \u003cul class=\"a\"\u003e\n \u003cli\u003ePOE HAT (B) for Raspberry Pi 4B\/3B+,Power Over Ethernet HAT,Support 802.3af PoE Network,802.3af Power-Sourcing Equipment Required\u003c\/li\u003e\n \u003cli\u003eIntegrates PCF8574 IO expander for I2C bus, providing pin P0 for directly fan control, and more spare IO pins\u003c\/li\u003e\n \u003cli\u003e0.91\" OLED, for monitoring processor temperature, IP address, and fan status in real-time; Onboard cooling fan, allows auto running on powerup OR programmable control, configured by switch\u003c\/li\u003e\n \u003cli\u003ePOE POWER INPUT:37V ~ 57V DC in. OLED SIZE:0.91\". POE POWER OUTPUT:5V 2.5A DC out .\u003c\/li\u003e\n \u003cli\u003eOLED PIXELS:12832. NETWORK STANDARD:802.3af PoE. OLED DRIVER:SSD1306. DIMENSIONS:56.5 65mm . OLED DISPLAY COLOR:white.\u003c\/li\u003e\n \u003c\/ul\u003e"}