The Raspberry Pi 5 supports PCIe 2.0 or PCIe 3.0 SSDs (although you need to hook an adapter board up to an FPC connector). Now Raspberry Pi offers its own branded SSDs (256GB for $37, 512GB for $55, 1TB for $70). https://www.raspberrypi.com/news/1tb-raspberry-pi-ssd-on-sale-now-for-70/#RaspberryPiSSD#RaspberryPi#SSD#RaspberryPi5