https://wccftech.com/a-raspberry-pi-alternative-the-nanopi-r2s-is-up-and-coming-featuring-2-ethernet-ports/ > People looking at the single-board computers (SBC) will soon have another option. FriendlyElec is coming out with the NanoPi R2S which SBC features more ethernet ports than the Raspberry Pi 4. > The NanoPI R2S only has a single USB 2.0 port located on the back while the Raspberry Pi 4B has two USB 3.0 ports and two USB 2.0 ports. The CPU that the NanoPi R2S uses a 4x Arm Cortex-A53 cores, which runs at 1.5 GHz while the Raspberry Pi 4 B utilizes the 4x Arm Cortex A-72 cores (Broadcom BCM2711B0) that runs at 1.5 GHz. The Raspberry SBC has various models that offer anywhere from 1 GB to 4 GB of DDR4 memory, while the NanoPi only features a 1 GB model. Both of these devices feature a MicroSD card slot for expansion.