Amazon.com: Power Over Ethernet HAT (B) for Raspberry Pi 3 Model B+ / Raspberry Pi 4 Model B, PoE HAT Board with 0.91" OLED and Cooling Fan, Support 802.3af PoE Network Power-Sourcing
USB 3.2 Gen1 HUB HAT For Raspberry Pi, 4x USB 3.2 Gen1 Ports, Driver-Free
Raspberry Pi A+/B+/Pi2/Pi3 Prototyping HAT (RPi-Proto-HAT) - Watterot
Adafruit Ultimate GPS HAT for Raspberry Pi A+/B+/Pi 2/3/Pi 4 - Mini Ki – Vilros.com
Raspberry Power Ethernet Hat | Raspberry Pi 4 Ethernet Hat | Raspberry Pi 3b Poe Hats - Demo Board Accessories - Aliexpress
UCTRONICS PoE HAT 5V 3A for Raspberry Pi 4B, 3B+ and 802.3af/at PoE Ne – Vilros.com
2-Channel CAN BUS Expansion HAT for RPI Raspberry Pi 3 Model B Plus 4 Zero 2 W 5 | eBay
SH-RPi (Sailor Hat for Raspberry Pi) – Hat Labs
Raspberry Pi PoE+ HAT for Pi 3B+ & Pi 4B
Triple LCD HAT display for cards Raspberry Pi
Raspberry Pi 3G/4G-LTE Base HAT
RPI-HAT-POE+ - Raspberry-pi - Add-on Board, PoE HAT, Raspberry Pi 3 Model B+
Amazon.com: waveshare PoE Ethernet USB HUB HAT with Box ABX Case for Raspberry Pi Zero/Zero W/2 W/Zero WH/2 WH, with 1 RJ45 10/100M Ethernet Port, 3 USB Ports Compatible with USB2.0/1.1,802.3af-Compliant :
Serial HAT (RS232)
Raspberry Pi PoE+ HAT, Compatible With Raspberry Pi 3B+/4B, 802.3af/at Power-Sourcing Equipment Required
IO Expansion Hat for Raspberry Pi 5 / 4 / 400 / 3 - DFRobot
Amazon.com: DollaTek UPS HAT with Battery for Raspberry Pi 3 Model B / 2B / B+ | Battery Adapter | Power Source Pi 3
![Adafruit Ultimate GPS HAT for Raspberry Pi A+/B+/Pi 2/3/4/Pi 5 [Mini Kit] : ID 2324 : $29.95 : Adafruit Industries, Unique & fun DIY electronics and kits](https://cdn-shop.adafruit.com/970x728/2324-11.jpg "Adafruit Ultimate GPS HAT for Raspberry Pi A+/B+/Pi 2/3/4/Pi 5 [Mini Kit] : ID 2324 : $29.95 : Adafruit Industries, Unique & fun DIY electronics and kits")
Adafruit Ultimate GPS HAT for Raspberry Pi A+/B+/Pi 2/3/4/Pi 5 [Mini Kit] : ID 2324 : $29.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Raspberry Pi 3G/4G-LTE Base HAT
Raspberry Pi Build HAT
HatDrive! Top (NVMe 2230, 2242 GEN 3) for Raspberry Pi 5 – Pineberry Pi
Raspberry Pi DIY Proto HAT High Quality Shield HAT Board Red for Raspberry Pi 3 Model
Trēo™ Raspberry Pi HAT Adapter – NightShade Electronics
The 10 best Raspberry Pi HATs — The MagPi magazine
Adafruit Perma-Proto HAT for Pi Mini Kit - No EEPROM : ID 2310 : $4.95 : Adafruit Industries, Unique & fun DIY electronics and kits
JTAG Hat – Blinkinlabs
