Raspberry Pi 4 Case for dAISy HAT – Wegmatt
Amazon.com: UCTRONICS PoE HAT for Raspberry Pi 4B/3B+, Power Over Ethernet (PoE) Support 802.3af PoE Network Standard, Compatible with Pi 4B / 3B+ : Electronics
Raspberry Pi 4 Pi4 Poe Hat Case Power Over Ethernet Box Mount VESA / Wall Mounting Options Available - Etsy
USB 3.2 Gen1 And Gigabit Ethernet HUB HAT for Raspberry Pi, 3x USB, 1x Gigabit ETH, Driver-Free - PiShop.us
Sailor Hat for Raspberry Pi (SH-RPi) – Hat Labs
USB 3.2 Gen1 & Gigabit Ethernet HUB HAT for Raspberry Pi, 3x USB, 1x ETH - RobotShop
PoE HAT for Raspberry Pi 4, UCTRONICS Mini Power over Ethernet Expansion Board for Raspberry Pi 4 B 3 B+, with Cooling Fan
Industrial Automation 8-Layer Stackable HAT for Raspberry Pi
16 LV Digital Inputs 8-Layer Stackable HAT for Raspberry Pi
Raspberry Pi POE + Hat - OKdo
Cluster HAT Kit (includes 4 x Raspberry Pi Zero W)
Power Over Ethernet (PoE) HAT for Raspberry Pi 3 B+ 4 and 802.3af PoE
Best Raspberry Pi HATs 2023: Expansion Boards for Every Project | Tom's Hardware
Amazon.com: Ethernet/USB HUB HAT Expansion Board for Raspberry Pi 4 B/3 B+/3 B/2 B/Zero/Zero W /2 W/Zero WH/2WH, with 1 RJ45 10/100M Ethernet Port, 3 USB Ports Compatible with USB2.0/1.1 : Electronics
Amazon.com: 4-Port Raspberry Pi USB HUB HAT for Raspberry Pi 4B/3B+/3B/2B/B+/A+/Zero/Zero W, 4 USB Ports Compatible with USB2.0/1.1 Onboard USB to UART Onboard Multi Indicators : Electronics
Witty Pi 4 HAT - RTC & Power Management for Raspberry Pi : ID 5704 : $37.50 : Adafruit Industries, Unique & fun DIY electronics and kits
Adafruit Perma-Proto HAT for Pi Mini Kit - With EEPROM
Adafruit BrainCraft HAT – Machine Learning for Raspberry Pi 4 | Elektor
Amazon.com: GeeekPi Fan Hat for Raspberry Pi 4 Model B, Raspberry Pi PWM Fan GPIO Expansion Board with 0.91inch OLED Display for Raspberry Pi 4B/3B+/3B/2B : Electronics
USB 3.2 Gen1 HUB HAT For Raspberry Pi, 4x USB 3.2 Gen1 Ports, Driver-Free
Amazon.com: Uninterruptible Power Supply UPS HAT for Raspberry Pi Series Boards(Raspberry Pi 4 Model B/3B+/3B) Charge and Power Output at The Same Time,Multi Battery Protection Circuits : Electronics
SparkFun Qwiic HAT for Raspberry Pi - DEV-14459 - SparkFun Electronics
Raspberry Pi 4-2G With PICAN3 CAN Bus HAT - Copperhill
RGB Cooling HAT with cooling fan RGB Light OLED for Raspberry Pi
