Introduction
Key Features
ROCK 4A/4A+/4B/4B+/4SE is an ultra-compact single-board computer (SBC) with leading performance and excellent mechanical compatibility. provides makers, IoT enthusiasts, hobbyists, PC DIY enthusiasts, and others with a reliable and powerful platform to build and refine their ideas, turning them into reality.
Rich Interface Options
ROCK 4A/4A+/4B/4B+/4SE offers a wealth of interfaces, including multiple USB ports, HDMI, and more, making it easy to connect external devices and expand functionality. For details, see Specifications.
Extensive Accessory Ecosystem
ROCK 4A/4A+/4B/4B+/4SE supports multiple cameras and displays, and its 40-PIN header is compatible with most sensor modules on the market.
Powerful Multimedia Processing
- The GPU integrates an Arm Mali™ T860MP4, supporting multiple graphics interfaces including OpenGL® ES 1.1/2.0/3.0/3.1/3.2, Vulkan® 1.0, Open CL® 1.1/1.2, and DirectX® 11.1, delivering efficient and smooth graphics processing.
Extensive OS Support
Supports multiple operating systems, including Radxa's official Debian and Android systems, as well as various third-party operating systems suitable for different application scenarios.
Open Source Support
ROCK 4A/4A+/4B/4B+/4SE provides complete hardware design schematics and software source code. This feature enables DIY enthusiasts and developers to make personalized modifications and functional expansions, attracting open-source enthusiasts to actively participate in the community and promoting knowledge sharing and technological innovation.
Long-term Availability
The Radxa team provides support for all ROCK 4 models until at least 2029.
Board Preview
- ROCK 4A
- ROCK 4B
- ROCK 4A+
- ROCK 4B+
- ROCK 4SE
Specifications
| Model | ROCK 4A | ROCK 4B | ROCK 4A+ | ROCK 4B+ | ROCK 4SE | ||
|---|---|---|---|---|---|---|---|
| CPU | 64-bit hexa-core processor Rockchip RK3399 SoC Dual Cortex-A72 @ 1.8 GHz, up to 2.0 GHz with quad Cortex-A53 @ 1.4 GHz | 64-bit hexa-core processor Rockchip OP1 SoC Dual Cortex-72 @ 2.0 GHz, up to 2.2/2.4 GHz with quad Cortex-A53 @ 1.5 GHz | 64-bit hexa-core processor Rockchip RK3399-T SoC Dual Cortex-A72 @ 1.5 GHz, up to 1.8 GHz with quad Cortex-A53 @ 1.4 GHz | ||||
| GPU | Integrated Arm Mali™ T860MP4 GPU, supporting: OpenGL® ES 1.1/2.0/3.0/3.1/3.2 Vulkan® 1.0 Open CL® 1.1/1.2 DirectX® 11.1 | ||||||
| Memory | 64-bit dual-channel LPDDR4@3200Mb/s 2GB/4GB options | 64-bit dual-channel LPDDR4@3200Mb/s 1GB/2GB/4GB options | 64-bit dual-channel LPDDR4@3200Mb/s 4GB | ||||
| Storage | eMMC connector μSD card (up to 256GB) M.2 SSD (supports up to 2TB NVMe SSD) M.2 SATA SSDs not supported | Onboard eMMC (up to 128GB option) μSD card (up to 256GB) M.2 SSD (supports up to 2TB NVMe SSD) | eMMC connector μSD card (up to 256GB) M.2 SSD (supports up to 2TB NVMe SSD) M.2 SATA SSDs not supported | ||||
| Display | Standard HDMI 2.0, up to 4k@60 2-lane MIPI DSI via FPC connector HDMI and MIPI DSI can work simultaneously in mirror or extended mode | ||||||
| Audio | 3.5mm jack with microphone ES8316 HD codec supporting up to 24-bit/96KHz audio | ||||||
| Camera | 2-lane MIPI CSI via FPC connector, supports up to 8MP camera (1mm pitch connector) | ||||||
| Hardware Codec | H.265/VP9 (HEVC) hardware decoding (up to 4Kp60) H.264 hardware decoding (up to 1080p60) | ||||||
| USB | USB2 HOST ports x2 USB3 HOST port x1 USB3 OTG port x1 | ||||||
| Ethernet | GbE LAN | Gigabit Ethernet with PoE support Compatible with Radxa 23W PoE HAT | GbE LAN | Gigabit Ethernet with PoE support Compatible with Radxa 23W PoE HAT | |||
| Wireless | N/A | WiFi5/BT5 (AP6256 module), onboard or external antenna | N/A | WiFi5/BT5 (AP6256 module), onboard or external antenna | WiFi5/BT5 (AW-CM256 module), onboard antenna (external antenna optional) | ||
| 40-PIN | 40-pin expansion header 2 x UART 2 x SPI bus 3 x I2C bus 1 x PCM/I2S 1 x SPDIF 2 x PWM 1 x ADC 27 x GPIO 2 x 5V DC power in 2 x 3.3V DC power in | ||||||
| SPI Flash | 4M | None | |||||
| Other | RTC RTC battery connector for time backup (optional) | ||||||
| Size | 85 mm x 56 mm | ||||||