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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.

For optimal performance, it's recommended to use a MicroSD card with a capacity of 32GB or larger.

ROCK 4D MicroSD Card Slot Location

User Guide

You can refer to the Quick Start or Install System to MicroSD Card tutorials to install the system image onto a MicroSD card. After installation, insert the MicroSD card into the card slot and test if the system boots normally.

Booting from MicroSD Card

Interface Specifications

tip

For detailed interface specifications, please refer to the Hardware Design: Schematics in the download section.

Pin#NamePin#NamePin#Name
1SDMMC0_D2/JTAG_TCK_M07SDMMC0_D013GND
2SDMMC0_D3/JTAG_TMS_M08SDMMC0_D114GND
3SDMMC0_CMD9SDMMC0_DET_L15GND
4VCC_3V3_S310GND16GND
5SDMMC0_CLK11GND17GND
6GND12GND18GND