Raspberry Pi standard 40 pin GPIO header (fully backwards compatible with previous boards). 1GB, 2GB, 4GB or 8GB LPDDR4-3200 SDRAM (depending on model). 2 USB 3.0 ports; 2 USB 2.0 ports.
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Raspberry Pi 15.3W USB-C Power Supply Official Original 5V3A type-C Power Adapter for Raspberry Pi 4 Model B
Aliexpress UK
Raspberry Pi standard 40 pin GPIO header (fully backwards compatible with previous boards). 1GB, 2GB, 4GB or 8GB LPDDR4-3200 SDRAM (depending on model). 2 USB 3.0 ports; 2 USB 2.0 ports.
eBay
Raspberry Pi GPIO Header Kit GPIO Edge Extension Board GPIO Header suitable for Raspberry Pi 4B 3B+ 3B Zero W Zero
Aliexpress UK
Raspberry Pi GPIO Header Kit 20 x 2 Pins Right Angle GPIO Header for Raspberry Pi Zero / 4B / 3B+ / 3B / 3A+
Aliexpress UK
3 in 1 Raspberry Pi Zero Adapter Kit + Micro USB Cable+ Mini HDMI-compatibe Adapter+ GPIO Header for Raspberry Pi Zero W 1.3
Aliexpress UK
Orange Pi Heatink for CPU Passive Cooling 14x14 x6 MM Aluminum Heat Sink Cooler for OPI Zero 3 2 Banana Pi Raspberry Pi 4 3
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Raspberry Pi 40 Pin GPIO Cable Male to Femal Or Female to Female Extension Cable Adapter for Orange Pi Raspberry Pi 5 4B 3B+ 3B
Aliexpress UK
Raspberry Pi Power Cable with switch ON/OFF button Micro USB charging cable for Banana PI Raspberry Pi 2 power cable with switch
Aliexpress UK
Raspberry Pi 40 Pin GPIO Cable Male to Femal Or Female to Female Extension Cable Adapter for Orange Pi Raspberry Pi 5 4B 3B+ 3B
Aliexpress UK