OKdo ROCK 4 Model C+ 4GB Single Board Computer Rockchip RK3399-T Arm Cortex-A72 + Cortex-A53

£54.30 incl. Sales Tax

OKdo ROCK 4 Model C+ 4GB Single Board Computer Rockchip RK3399-T Arm Cortex-A72 + Cortex-A53

OKdo ROCK 4 Model C+ 4GB Single Board Computer Rockchip RK3399-T Arm Cortex-A72 + Cortex-A53

  • ROCK 4C+ SBC based on the powerful Rockchip RK3399‑T SoC
  • Hexa-core processor with Arm® big.LITTLEdual Arm Cortex® A72, quad Cortex-A53 CPU, and Arm Mali™ T860MP4 GPU
  • 4GB 64-bit RAM and eMMC socket
  • Power on/off button, integrated fan control, external antenna & audio jack
  • Dual micro-HDMI ports supporting displays of up to 4Kp60 resolution
  • Bluetooth 5.0 with BLE, Gigabit Ethernet and Wireless LAN

Buying for business? Contact our sales team here


excl. Sales Tax £45.25
Buy product

Product Details


The ROCK 4C+ single board computer is a robust, high-performing, multifunctional board based on the powerful Rockchip RK3399‑T SoC. Developed by OKdo in collaboration with Radxa, ROCK 4C+ is a perfect Raspberry Pi alternative that incorporates class-leading features, including Dual Arm Cortex A72 CPU, Quad Arm Cortex A53, Arm Mali T860MP4 GPU, integrated fan control, stereo audio jack, dual micro-HDMI ports supporting displays up to 4Kp60 resolution, multiple connectivity and storage possibilities and compatible with a wide range of software operating systems. With the onboard On/Off power button, ROCK 4C+ is an energy-efficient single board computer that can now perform safe shutdowns at the touch of a button without the risk of corrupting storage. It also features multiple storage capabilities, such as 4GB 64-bit RAM and an eMMC socket for robust applications. The board’s incredible features make it ideal for various multimedia and industrial applications, ensuring outstanding performance and reliability in the most demanding of applications.


Key benefits of the ROCK 4C+ single board computer

Reliable Rockchip SoC

ROCK 4C+ provides reliable and robust performance based on the Rockchip RK3399-T SoC, Arm big.LITTLE technology Dual Cortex-A72@1.5GHz, Quad Cortex-A53@1.0GHz CPU, Arm Mali – T860MP4 GPU and 4GB 64bit LPDDR4 RAM. Be sure that your board will deliver outstanding performance, it’s solid as a ROCK!

Power On/Off button

You ask, and we listen. FINALLY, a board with a built-in On/Off power button that can now perform safe shutdowns at the touch of a button without the risk of corrupting storage. ROCK 4C+ is an energy-efficient single-board computer that offers this huge convenience compared to alternative boards, allowing you to be flexible with your applications.

More OS, more options

ROCK 4C+ is extremely practical, as it is compatible with multiple operating systems, including Android, Debian/Ubuntu Linux, the full implementation of the Arm architecture v8‑A instructions set, and others.

No more storage limitations

ROCK 4C+ benefits from extensive storage capacity, including 4GB RAM and a high-speed eMMC socket for eMMC modules which can be used for OS and data storage.

Highly compatible with SBC accessories 

The 40-pin header supports a wide range of interface options, providing the board with a vast range of connectivity capabilities to ensure exceptional compatibility with a wide range of existing accessories. Due to the dual functionality of many of the pins, the ROCK 4C+ opens the possibilities for advanced accessories never seen before!

Dual monitor 4K output 

With an Arm Mali T860MP4 graphics processing unit (GPU) at its heart, the ROCK 4C+ is perfect for advanced multimedia applications, including games, videos and signage. The board benefits from camera and display interfaces, two micro HDMI ports supporting dual displays up to 2Kp60 and 4Kp60 resolution, high-quality stereo audio output through a 3.5mm audio jack, and much more.

True thermal management

The ROCK 4C+ has a 2pin 1.25mm header, allowing the connection to a 5V fan (or other peripheral), which can be PWM controlled.


  • 802.11 b/g/n/ac (WiFi 5) Wireless LAN
  • Bluetooth 5.0 with BLE
  • 1 x micro-SD card slot
  • eMMC socket
  • 2 x HDMI ports supporting displays up to 4Kp60 resolution and 2Kp60
  • 2 x USB2 HOST ports
  • 1 x USB3 OTG/HOST port, 1x USB3 HOST port
  • 1 x Gigabit Ethernet port (supports PoE with add‑on PoE HAT)
  • 1 x camera port (2‑lane MIPI CSI)
  • 1 x display port (4‑lane MIPI DSI)
  • 40 x user GPIO supporting a wide range of interface options: 2 x UART, 2 x SPI bus, 2 x I2C bus, 1 x PCM/I2S, 1 x SPDIF, 1 x PWM, 1 x ADC, 6 x GPIO, 2 x 5V DC power in, 2 x 3.3V power pin. The GPIO header is 97.5% (39/40) Raspberry Pi compatible.

How to customise your ROCK board? 

Your board, your way. With OKdo, you can customise the board in large volumes. Reach out to us and learn about our conditions and how you can customise the ROCK 4C+ to tailor it to your design needs. 

You can now benefit from the adaptive design of the ROCK 4C+, add or remove components or even fully configure it for low-cost applications efficiency and environmental improvements.​ 

If you want to learn more about customisation or to buy in bulk, contact us here


OKdo and Radxa ensured long-term stock availability of the ROCK 4C+. The ROCK 4C+ single board computer is the perfect Raspberry Pi alternative, allowing you to focus on developing incredible design applications and sparing you from stock hunting.

Who is Radxa? 

OKdo has an exclusive partnership with Radxa to manufacture and distribute ROCK Single Board Computers (SBCs) and ROCK System on Modules (SoMs). Radxa is a technical startup founded in 2013 that focuses on the design, manufacture and production of open-source hardware products that include the range formerly known as Rock Pi.

Technical Specifications

ROCK 4C+ Board
SOC Rockchip RK3399-T
Processor Arm big.LITTLE technology (Dual Cortex-A72@1.5GHz, Quad Cortex-A53@1.0GHz) 
GPU 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 and DirectX® 11.1
Memory Dual channel (64bit) 4GB LPDDR4 RAM 
Power Requirements USB C 5V/3A 

5V Power applied to the GPIO PIN 2 & 4

The recommended power source capacity is at least 5V/3A

HDMI Dual micro HDMI ports supporting displays up to 4Kp60 resolution and 2Kp60
USB 2x USB2 HOST ports

1x USB3 OTG/HOST port

1x USB3 HOST port

Connectivity 802.11 b/g/n/ac (WiFi 5) Wireless LAN

Bluetooth 5.0 with BLE

Gigabit Ethernet

MIPI 1 x 4 lane DSI/1 x 2 lane CSI
Storage Micro SD / eMMC
External Antenna YES
On/Off Power Button YES
Software Full implementation of the Arm architecture v8‑A instructions set, Arm Neon™ Advanced SIMD (single instructions, multiple data) support for accelerating media and signal processing

Armv8 cryptography extensions

TrustZone® technology support

Debian/Ubuntu Linux support

Android 7.1/Android 5.0/Android 10/Android 11 support

GPU enabled Al stack, (e.g. Caffe)

Hardware access/control library for Linux/Android 

Temperature Operation temperature: 0~50 ℃

Storage temperature: -20~80 ℃

Key product features of the ROCK 4C+

Pinout Diagram:

ROCK 4C+ pinout diagram

ROCK 4C+ Resources

Need some inspiration to help you create amazing applications with your brand-new ROCK 4C+? Check out our resources below:


What operating systems is ROCK 4C+ compatible with?
The ROCK 4C+ is equipped with the ARMv8 Instruction Set making it compatible with Debian/Ubuntu Linux, Android 7.1/Android 9.0/Android 10/Android 11, GPU-enabled AI stack such as Caffe, as well as Hardware access/control library for Linux/Android.

What applications is the ROCK 4C+ ideal for?
ROCK is extremely versatile and will satisfy the requirements of a huge variety of applications. Considering the ROCK 4C+’s tech specs, price, and sustainability it is ideal for a range of applications including, but not limited to:

  • Automated Building Surveying and Terrain Mapping
  • Industrial Communication & Connectivity Systems
  • Prototyping
  • Smart EV Charging Solutions
  • Smart Livestock Count Solutions
  • Smart Vending Machines

For more details of exactly what ROCK is capable of, check out our Ultimate Guide to ROCK or get in touch with our expert team to discuss your requirements.

Is the ROCK 4C+ suitable for developing AI applications?
Yes, ROCK 4C+ supports a mainstream AI stack (e.g. Caffe) with GPU acceleration.

Are there any getting-started guides available for ROCK?
Yes, please check the Resources section on this page or our Getting Started Guides hub.

Can ROCK boot from USB?
No, but the ROCK 4C+ can boot from an SD card and eMMC.

Can ROCK run multiple programs?
Yes, ROCK can run multiple programs/scripts simultaneously.

Does it support accessories?
Yes, thanks to its 40-pin GPIO header it’s compatible with a range of SBC accessories on the market. We also stock a range of ROCK accessories in our ROCK Shop.









Okay, no reviews ... yet.

Be the first to review OKdo ROCK 4 Model C+ 4GB Single Board Computer Rockchip RK3399-T Arm Cortex-A72 + Cortex-A53. Help others in the community by sharing your experience.

We are here to help you design the world. This product is covered by our refunds policy.

Add a review

This will show next to your review. You can use a pseudonym if you want to.
This is used to check our reviews are written by real people. Anyone can write a review. Your review will show as written by a 'Verified owner' if you've bought this product from okdo.com using this email before. It will never be sold or used to send you marketing emails.

Technical Reference


Our website uses cookies and similar technologies to provide you with a better service while searching or placing an order, for analytical purposes and to personalise our advertising. You can change your cookie settings by reading our cookie policy. Otherwise, we’ll assume you’re OK with our use of cookies.


Please select an option to see content specific to your location and shop online.

Browse the US site