A Go2 was taken apart down to every board and motor, over 68 pages of lab photos. We read every chip we could, rebuilt each part in 3D below, and marked the chips Unitree ground blank so nobody could read them.
RK3588S8-core Arm brain with an AI accelerator
12leg motors, each with its own driver
4G · Wi-Fi 6plus UWB and a long-range remote link
4boards with their chip markings ground off
ReadMatchedGround blankInferred
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Each number is a part found in the teardown. X-ray fades the shell to show the rebuilt parts inside.
Each board and motor redrawn from the teardown: outline, chip sizes and every marking we could read, printed on the chip exactly as it appears. Pick a part, turn it, tap a number.
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The short answer
BrainRockchip RK3588S8-core Arm + AI accelerator, 8 GB / 64 GB
Mobile dataQuectel EG25-G 4GQualcomm MDM9207 inside
Wi-Fi + BluetoothRealtek RTL8852BUWi-Fi 6, on an LB-Link module
Legs12 brushless motorsa driver board inside every joint
Remote linkOwn long-range radioplus a LoRa antenna; chips ground blank
How it is wired
Read straight off the main board, “712 MAIN BOARD-RK V0.21, 2023/6/17”. Every label below is printed on the board itself.
Red boxes: radio boards whose chip markings Unitree ground off (the core board and the leg drivers were treated the same way).
Every part, and how sure we are
Read: the name is printed on the part and legible. Matched: not legible on the Go2, identified another way. Ground blank: Unitree removed the marking. Inferred: our best reading, explained.
The brain: Rockchip RK3588S core board Matched
A plug-in computer board, XF_RK_Core_Board_V10, sits on the main board under an aluminium heatsink with copper heat pipes and a blower fan. It holds the processor, its memory, its storage and a power chip. On the Go2 every chip top is ground blank, but the board is silkscreened “8+64G”: 8 GB of memory, 64 GB of storage.
How we know it is an RK3588S: the identical board, same name, layout and “8+64G” label, turns up in Unitree's 2025 humanoid with its markings intact: Rockchip RK3588S, two Biwin BWMZCX32H2A-32G-X memory chips, Biwin BWCTAKJ11X64G storage and a Rockchip power chip. The Go2 and the humanoid share one brain.
RK3588S: 4× Cortex-A76 + 4× Cortex-A55, 6 TOPS neural accelerator, built for cameras and on-device AI.
4G: Quectel EG25-G Read
A standard 4G card pushed into a mini PCIe socket on the main board. Under its shield: a Qualcomm MDM9207 modem, Nanya NM1282KSLAXAL-3B memory, a Qualcomm WTR2965 transceiver and two Qorvo power amplifiers (77031, 77033).
Why it is there. It lets the dog be reached from the phone app away from home Wi-Fi.
Wi-Fi 6 and Bluetooth: Realtek RTL8852BU Read
A module labelled BL-M8852BU1 (an LB-Link part) carries the Realtek RTL8852BU: dual-band Wi-Fi 6 plus Bluetooth over USB. Two antenna cables, “chain 0” and “chain 1”, go to Rainsun antennas. The phone app and controller connect here.
Remote-control radio “YS.PPRF” Ground blank
A separate radio board, silkscreened YS.PPRF 23, with a 2401C 2.4 GHz front-end amplifier and two crystals. Its two main chips have had their markings ground off. A separate LoRa antenna is fitted too, so the dog has a slow, long-range link as well as Wi-Fi.
UWB positioning board Ground blank
A clover-shaped gold board with four UWB antennas: the hardware behind “follow me”. Ultra-wideband pulses measure the exact distance and angle to the handheld remote. The ranging chip, its controller and the amplifiers beside them all had their markings ground off.
Twelve leg motors, each with its own driver Read
Three joints per leg (hip side-swing, hip, knee), each a flat outrunner brushless motor in a finned aluminium housing. A round driver board, silkscreened “M12_MDRV_V1.9.1 · 2023/5/10 · Unitree”, sits inside the joint with its power transistors and capacitors; a small star-shaped board, most likely the position sensor, sits at the centre. The main board only sends commands down one bus per leg; the high current never leaves the joint.
The centre chip on the driver board has had its marking removed.
A small motor board, “LD BOT V0.2.6” Inferred
A compact brushless motor, about 5 cm across, paired with a board marked “LD BOT V0.2.6 By Unitree”. It is far smaller than the leg motors. The main board has a port labelled LIDAR and the Go2 carries a spinning LiDAR under its chin, so this is most likely the motor that turns it. That is our reading; nothing on the part says so.
Cooling: two 12 V blower fans Read
Small DC brushless blowers from Shenzhen Zhuoming Electronics, 12 V. One sits beside the core board's heatsink and pushes air along its heat pipes; a second is in the body.
What Unitree hides
On four boards (the processor, the motor-driver chip, the UWB chips and the remote radio's chips) the printed part numbers were physically ground off before the robot left the factory for testing. Everything bought in as a finished module, the 4G card and the Wi-Fi module, was left readable. It is a common way to slow down copycats, and it is why the processor is identified by matching boards rather than read directly. In the 3D parts above, ground chips are drawn blank with their grinding marks; toggle the core board to see what its chips say on the humanoid.
All parts in one table
Part
What is printed on it
Role
Sure?
Main board
712 MAIN BOARD-RK V0.21, 2023/6/17
Connects everything
Read
Core board
XF_RK_Core_Board_V10, 8+64G
Main computer
Read
Processor
(ground blank) · RK3588S on the identical humanoid board
Walking, vision, app
Matched
4G card
Quectel EG25-G
Mobile data
Read
Modem chip
Qualcomm MDM9207
Inside the 4G card
Read
Modem memory
Nanya NM1282KSLAXAL-3B
Inside the 4G card
Read
RF transceiver
Qualcomm WTR2965
Inside the 4G card
Read
Power amplifiers
Qorvo 77031, 77033
Inside the 4G card
Read
Wi-Fi module
LB-Link BL-M8852BU1
Wi-Fi 6 + Bluetooth
Read
Wi-Fi chip
Realtek RTL8852BU
Inside the Wi-Fi module
Read
Remote radio
YS.PPRF 23, 2401C front end
Controller link
Partly blank
UWB board
(chips ground blank)
Follow-me positioning
Ground blank
Leg motor driver ×12
M12_MDRV_V1.9.1, 2023/5/10
Drives one joint
Read
Small motor board
LD BOT V0.2.6
Likely LiDAR spin motor
Inferred
Ethernet flex
712 ETH FPC, 2023/5/9
Wired network port
Read
Blower fans ×2
Shenzhen Zhuoming, DC 12 V
Cooling
Read
Antennas
Rainsun (Wi-Fi), plus LoRa, 4G, UWB
Radios
Read
Questions
What processor does the Unitree Go2 use?
A Rockchip RK3588S, an 8-core Arm chip with a built-in AI accelerator, on a plug-in core board marked XF_RK_Core_Board_V10 with 8 GB of memory and 64 GB of storage. The chip tops on the Go2 are ground blank, but the same core board appears in Unitree's 2025 humanoid with its markings intact.
Does the Unitree Go2 have 4G?
The unit that was taken apart has a Quectel EG25-G 4G LTE card built on a Qualcomm MDM9207 modem, pushed into a mini PCIe socket on the main board. It also carries Wi-Fi 6 and Bluetooth (Realtek RTL8852BU), UWB and a separate long-range radio for the remote.
How many motors does the Go2 have?
Twelve leg motors, three per leg. Each is an outrunner brushless motor with its own round driver board (marked M12_MDRV_V1.9.1, dated 2023/5/10) mounted inside the joint, so the main computer sends commands over a bus instead of driving motor current itself.
Based on laboratory teardown photographs of a Go2 test unit, May 2024. The photos are not reproduced here; every part above is redrawn, and sizes are approximate. Production units may differ. Not affiliated with Unitree. Spotted a mistake? Tell us and we will fix it.
Adem Inside