Hardware Usage

This section provides an introduction and usage guide for the hardware interfaces of the Radxa ROCK 4D.

📄️ microSD Card Slot

The Radxa ROCK 4D features a standard onboard microSD card slot, compatible with microSD / microSDHC / microSDXC cards, primarily used as a system boot drive or for expanding storage capacity.

📄️ eMMC / UFS Module Interface

The Radxa ROCK 4D features an onboard eMMC/UFS combo module interface that supports both eMMC and UFS modules, which can be used as a system boot drive or for expanding storage capacity.

📄️ Power Header

Radxa Rock 4D supports three power supply methods:

📄️ HDMI 2.1 Interface

The Radxa ROCK 4D features one onboard HDMI 2.1 port that supports video output up to 4Kp120.

📄️ USB Type-A Ports

The Radxa ROCK 4D features 4 onboard USB Type-A ports, including 2 USB 3.0 ports and 2 USB 2.0 ports.

The Radxa ROCK 4D supports both USB Type-C and GPIO power input. We recommend using the USB Type-C port for power supply, which supports 5V input only. A minimum current of 3A is recommended to ensure stable operation of all peripherals.

📄️ 40-Pin GPIO Interface

The Radxa ROCK 4D features an onboard 40-Pin GPIO (General Purpose Input/Output) interface, providing highly flexible interface support for hardware expansion.

📄️ Maskrom Button

The Radxa ROCK 4D features an onboard Maskrom button for entering Maskrom mode.

📄️ Recovery Pins

In hardware version v1.12 and later, the Recovery pins have been removed and replaced with power supply pins. To enter Loader mode, please use the reboot loader command after entering the system.

📄️ Gigabit Ethernet (with PoE Support) Interface

The Radxa ROCK 4D features one onboard Gigabit Ethernet port with PoE (Power over Ethernet) capability. However, to utilize PoE power delivery, you'll need to purchase and install a PoE HAT expansion board separately.

📄️ MIPI CSI Interface

The Radxa ROCK 4D features 2 onboard MIPI CSI interfaces for connecting camera modules:

📄️ MIPI DSI Interface

The Radxa ROCK 4D features one onboard MIPI DSI interface for connecting displays, supporting resolutions up to 2K.

📄️ FPC Connector

The Radxa ROCK 4D features an onboard FPC (Flexible Printed Circuit) connector that supports PCIe 2.1 standard with a single lane (x1) for high-speed data expansion.

📄️ RTC Connector

The Radxa ROCK 4D features an onboard RTC battery connector that allows you to connect an RTC battery. This provides continuous power to the Real-Time Clock (RTC) chip during power loss, ensuring the system clock continues to keep accurate time even when the board is powered off.