2 layers19.8 × 14.5 mmR4s flasharnarg/nanopi-r4s-spi-flash-boardPCB for NanoPi R4S GPIO header to add SPI Flash6 parts1
4 layers95.8 × 82.4 mmF3 backplanearnarg/f3_backplaneBackplane PCB for Terramaster F2-221, adding NVMe SSD50 parts33