Probably best to buy from official raspi reseller - form at bottom of <https://www.raspberrypi.org/products/raspberry-pi-4-model-b/ https://www.raspberrypi.org/

Probably best to buy from official raspi reseller - form at bottom of <https://www.raspberrypi.org/products/raspberry-pi-4-model-b/ https://www.raspberrypi.org/products/raspberry-pi-4-model-b/> with links given specs