Androidsbc - China source manufacturer for Hardware customization RK3588 board. Featured model WL-RK1 (3.5-inch Industrial SBC): Rockchip RK3588J industrial grade, 4x A76 + 4x A55, 8nm; 4GB LPDDR4X 64-bit (8GB/16GB optional); 2x Gigabit Ethernet RJ45 (RTL8211F), 4kV surge protection; 2x RS232 + 2x RS485 (isolated), 1x debug UART; Industrial -40 to 85 Degree ···