Sailor Hat for Raspberry Pi (SH-RPi) – Hat Labs
Adafruit Perma-Proto HAT for Pi Mini Kit - With EEPROM
Adafruit BrainCraft HAT – Machine Learning for Raspberry Pi 4 | Elektor
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
Amazon.com: Geekworm for Raspberry Pi 4 NVME HAT, X876 V1.1 NVME M.2 SSD Storage Expansion Board UASP Supported Compatible with Raspberry Pi 4 Model B Only Support Key-M 2280 SSD : Electronics
POE HAT box for Raspberry Pi 4
Power Over Ethernet (PoE) HAT for Raspberry Pi 3 B+ 4 and 802.3af PoE
16 LV Digital Inputs 8-Layer Stackable HAT for Raspberry Pi
Raspberry Pi PoE+ HAT : ID 5058 : $20.00 : Adafruit Industries, Unique & fun DIY electronics and kits
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
Raspberry Pi POE + Hat - OKdo
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 And Gigabit Ethernet HUB HAT for Raspberry Pi, 3x USB, 1x Gigabit ETH, Driver-Free - PiShop.us
Raspberry Pi 4-2G With PICAN3 CAN Bus HAT - Copperhill
Raspberry Pi 4B/3B+/3B X930 HiFi DAC HAT Expansion Board – Geekworm
Amazon.com: RS485 CAN HAT for Raspberry Pi 4B/3B+/3B/2B/B+/A+/Zero/Zero W/WH/Zero 2W, Long-Distance Communication via RS485/CAN Function Onboard CAN Controller MCP2515 via SPI Interface Transceiver SIT65HVD230DR : Electronics
Power over Internet(POE) Hat for Raspberry Pi 4/3B+
Raspberry Pi 4 Pi4 Poe Hat Case Power Over Ethernet Box Mount VESA / Wall Mounting Options Available - Etsy
USB 3.2 Gen1 HUB HAT For Raspberry Pi, 4x USB 3.2 Gen1 Ports, Driver-Free
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
