Radxa ROCK 4B+ Single Board Computer

A media-ready SBC with a wired-power option

The Radxa ROCK 4B+ takes the RK3399-based ROCK 4 platform and fits it with the Rockchip OP1 SoC, a variant tuned for this board with a dual-core Cortex-A72 cluster running at 2.0GHz alongside a quad-core Cortex-A53 cluster at 1.5GHz. Graphics come from an Arm Mali T860MP4 GPU that supports OpenGL, Vulkan and DirectX 11.1, and hardware decoding covers H.265, VP9 and H.264 up to 4K at 60 frames per second, which takes the load off the CPU for video playback.

Networking is a strong point on this model: Gigabit Ethernet is built in, and with an additional PoE HAT the board can be powered entirely over its Ethernet cable, which simplifies wall-mounted or out-of-the-way installations. WiFi 5 and Bluetooth 5.0 are onboard as well, so a wireless connection needs no extra hardware.

Storage and software

Storage options scale from a microSD card slot for quick setup, to onboard eMMC modules of up to 128GB for a fixed and reliable boot drive, up to an M.2 NVMe SSD slot for the fastest throughput. That range covers everything from a cheap test board to a system meant to run continuously with real storage performance. Radxa lists both Debian Linux and Android as compatible operating systems.

Because the PoE feature needs its own HAT, check that you order or already own that accessory if wired power is the reason you are choosing this board.

Who it is for

Builders working on always-on network appliances, media players, digital signage or PoE-powered installations will get the most from the ROCK 4B+. The listing here ships in the standard configuration described above.

Questions buyers ask

Does it support Power over Ethernet?

Yes, with an additional PoE HAT; Gigabit Ethernet is built in on the board itself.

What video decode does it support?

Hardware decoding for H.265, VP9 and H.264, up to 4K at 60fps.

Is wireless built in?

Yes, WiFi 5 and Bluetooth 5.0 are onboard.

How much storage can it take?