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

£68.40 incl. Sales Tax

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

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

  • ROCK 4 SE - a robust, versatile special edition single-board computer  
  • High-performing Hexa-core Rockchip RK3399-T processor 
  • Hexa-core processor with big.LITTLE™ Arm® Dual Cortex-A72® CPU, Quad-core Cortex-A53 and Arm Mali™ - T860MP4 GPU 
  • Available in a 4GB 64bit LPDDR4 RAM option 
  • Expandable with eMMC module or SSD through m.2 connector  
  • Onboard RTC, WiFi, Bluetooth, Antenna, Audio jack (headphone and headset), 4K HDMI port

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excl. Sales Tax £57.00
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Product Details


ROCK 4 SE is a reliable and high-performing single-board computer that offers class-leading performance and superior hardware as standard. This special edition board is based on a powerful Rockchip RK3399-T hexa-core processor, big.LITTLE™ Arm® Dual Cortex-A72® CPU, Arm Mali™ – T860MP4 GPU and 4GB 64bit LPDDR4 RAM. With onboard RTC, WiFi, Bluetooth, antenna, audio jack, 4K HDMI port, and many more, ROCK 4 SE is the perfect Raspberry Pi alternative, that provides an incredible performance solid as a ROCK!


Note: We recommend using a PD or QC power supply with a maximum output of 9V or 12V.

What Are the Key Benefits of the ROCK 4 SE? 

Powerful Rockchip processor  

A low-power high-performing Rockchip RK3399-T processor is embedded into the heart of the ROCK 4 SE board. Equipped with an 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 provide a high-performance solid as a ROCK!  

Extensive storage capacity 

ROCK 4 SE offers you an immense advantage over other competitors’ boards, benefiting from extensive storage capability. It features a Micro SD card, an eMMC and an M.2 (M key), ensuring the board with a tremendous amount of additional storage capacity.  

RTC (real-time clock)  

The onboard real-time clock allows you to accurately register the time even when the ROCK 4 SE is powered off. The board features an onboard connector for an RTC battery. 

Multiple connectivity capabilities 

The board offers you multiple connectivity capabilities, including Bluetooth 5.0, WiFi, Gigabit Ethernet, USB and HDMI ports, and a built-in antenna, allowing you to widely incorporate ROCK 4 SE into your applications.  

Highly compatible with SBC accessories 

ROCK 4 SE features an onboard 40P GPIO extension header, offering extensive compatibility with a wide range of SBC accessories. 

Advanced multimedia functions 

The ROCK 4 SE is fitted with an Arm Mali™ – T860MP4 quad-core graphics processing unit (GPU), ideal for advanced multimedia applications, including games. The board incorporates camera and display interfaces, an HDMI port supporting displays up to 4Kp60 resolution, a high-quality audio output via a 3.5mm onboard audio jack that supports microphone input as default, and much more. 

Why is ROCK 4 SE the perfect Raspberry Pi alternative? 

  • Better performance – 4GB 64bit RAM, more processing cores and a broader memory interface, 
  • Extensive storage capacity, 
  • Similar form factor, 
  • 40 pin GPIO extension header. 

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 find out our conditions and how you can customise the ROCK 4 SE to tailor it to your design needs. 

You can now benefit from the adaptive design of the ROCK 4 SE and add or remove components or even fully configure it for low-cost applications efficiency and environmental improvements.​ Speak to an expert, contact us here. 


OKdo, in collaboration with Radxa, ensured long-term stock availability of ROCK 4 SE, sparing you from stock hunting and allowing you to focus on designing the world with breathtaking innovations.  

Technical Specifications

ROCK 4 SE 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, DX11 
Memory Dual channel (64bit) 4GB LPDDR4 RAM 
Power Req USB Type-C™ PD/QC 9-12V 
HDMI 1 x 4k@60fps HDMI 
USB 2 x USB 2.0
1 x USB 3.0, 1 x USB 3.0 OTG (Switchable)
Audio Ports 3.5mm jack, analogue stereo output, microphone input
Connectivity WiFi 5/BT 5.0, BLE, Gigabit Ethernet
MIPI 1 x 2 lane DSI/1 x 2 lane CSI
Storage Micro SD / M.2 (M key) / eMMC
EMMC B2B connector
RTC YES (support for external battery)
Software ARMv8 Instruction Set

Debian/Ubuntu Linux support

Android 7.1/Android 9.0/Android 10/Android 11 support

GPU-enabled AI stack such as Caffe

Hardware access/control library for Linux/Android

Temperature Operation Temperature: 0~50 ℃/ Storage Temperature: -20~80 ℃

Key product features of ROCK 4 SE


Pinout Diagram of the ROCK 4 SE

ROCK 4 SE pinout diagram


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


What operating systems is ROCK 4 SE compatible with?
The ROCK 4 SE 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 4 SE ideal for?
ROCK is extremely versatile and will satisfy the requirements of a huge variety of applications. Considering the ROCK 4 SE’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 POS Terminals
  • Smart Security Systems
  • 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 4 SE suitable for developing AI applications?
Yes, ROCK 4 SE supports a mainstream AI stack 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 4 SE 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.









3.5 out of 5 ( 2 customer reviews )

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  • 3.0

    A viable, in-stock SBC, with some quirks.

    The little ROCK 4 SE is a board with a bit of heritage behind it. Radxa have been making different flavours of this board with a variety of processors and peripherals for several years. Also - it's in stock, which puts it way higher up the desirability level than the Pi or CM4, where you have to play hunt the board, sometimes for weeks to get one.

    Why only three stars then? Well, mostly because it's a bit inflexible in its current incarnation. The only option is the 4gb version. The Radxa ROCK 5 is already announced, with evaluation boards already in the wild and general availability expected in the next few weeks/months. It sports an extra 2 fast cores (bringing the total to 4 "big" cores and 4 "small" cores, and memory options of 4gb, 8gb or 16gb, plus 2.5gb Ethernet and a bunch of other upgrades. From that perspective then, you're buying a slightly older design, and a lower specification but that is available now and is cheaper than the ROCK 5 will be.

    There are some other quirks. Storage initially looks good - there are three options - SD card, eMMC or an M.2 NVME socket, however my initial excitement died a little when I realized that the M.2 socket is in a REALLY odd place on the board - it's on the bottom of the board, on one of the shorter edges, but it faces outwards which means that the NVME drive literally sticks out like a sore thumb, nearly doubling the length of the board.

    It couldn't have been mounted the other way because it would have sat directly above the processor. It's a bizarre, and not really viable solution. There is a fix though - an expansion card that mounts on top of the board and flips the socket over so the overhang on a 2280 card is much smaller, although it does still stick out a bit but it's not sold in the UK at the moment, so you'll have to buy from China or USA if you want usable NVME.

    On to the eMMC then, and again, eMMC is generally faster and more reliable than SD card, so a fair backup option in the absence of NVME. Except that the eMMC connector chip is specifically designed to fit specific 38pin/30pin high density connectors which aren't available in the UK, so again it's off to China or USA if you want to use eMMC. Plus eMMC is expensive, so not really great as a "one and only" drive. You do have some USB 3 ports too, so USB storage is an option, but I don't think the ROCK 4 can boot from USB drives (or I haven't worked out yet how to make it work).

    So then, that just leaves SD cards. I've had enough SD cards fail on me over the years that I wouldn't consider them as viable OS drives for anything but the most trivial of projects, but as of right now, that's really your only option to get started. I have been in contact with the OKDO technical team, and they acknowledged the storage shortcomings and are looking at options to address them, but they aren't available today.

    Summary: A useful little board, with more cores than a Raspberry Pi 4 but fixed at 4gb RAM, limited storage options at the moment, but in stock and not outrageously priced.

    verified owner
  • 4.0

    Better storage availability = higher score

    Following on from my previous review, I see that OKdo now stock the necessary eMMC memory to accompany this board, so my review goes up to a solid 4 stars. If the NVME expansion board arrives in stock too this would be a stand-out 5 star review (cost/value against the now shipping Rock 5 which is much more capable but >2x the price.)

    verified owner

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