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The Radxa ROCK 4A is a single board computer built around Rockchip's RK3399 system-on-chip, pairing a dual-core Cortex-A72 cluster with a quad-core Cortex-A53 cluster. That split lets the board push demanding threads onto the faster cores while background tasks run on the efficient ones, which is the same big.LITTLE approach used in many phones and tablets of that era.
Graphics come from an Arm Mali T860MP4 GPU that can drive 4K video and supports OpenGL, Vulkan and DirectX, so the board can act as a lightweight desktop, a media centre or a display driver for a kiosk. Radxa lists Debian Linux and Android as supported operating systems.
Connectivity covers Gigabit Ethernet, USB 3.0, USB 2.0 and HDMI, giving enough bandwidth for external drives, a monitor and a wired network connection at the same time. For storage, the board supports NVMe SSDs for the fastest option, onboard eMMC for a fixed, reliable module, and a microSD slot for the cheapest way to get started.
A 40-pin GPIO header exposes UART, SPI, I2C and other general-purpose lines, so the board can talk to sensors, displays and other hardware the way a Raspberry Pi-style board would. Power can come from USB PD 2.0, Qualcomm Quick Charge or a plain fixed-voltage adapter, which gives some freedom in what charger or power supply you already own.
Anyone building a compact Linux workstation, a media player, a network appliance or a hobby project that needs real CPU and GPU power in a small board will find the ROCK 4A a solid base. Radxa backs it with a 14-day replacement warranty for manufacturing defects, and the model here ships as a standalone board.
Radxa lists Debian Linux and Android as supported systems for the ROCK 4A.
NVMe SSD, onboard eMMC and a microSD card slot.
Yes, the Mali T860MP4 GPU supports 4K video output through HDMI.
It accepts USB PD 2.0, Qualcomm Quick Charge, or a fixed-voltage adapter.
Yes, a 40-pin header exposes UART, SPI, I2C and general-purpose pins.
| Brand | Radxa |
|---|---|
| Interface Type | GPIO, USB 3.0, USB 2.0, HDMI, Gigabit Ethernet |
| MCU / Processor | Rockchip RK3399 |
| Selling unit | PCS |
