Dual micro SD card slots on a single compact board to support two systems - 2-in-1 TF Card Adapter with two micro SD slots on one board - Dual system capability designed for users who need to switch between two Raspberry Pi environments - Compatible with Raspberry Pi 4 Model B, Raspberry Pi 3 Model B, Raspberry Pi 2 Model B, Raspberry Pi Zero, and Raspberry Pi Zero W - Suitable for cases that have a TF card slot - Package includes 1 x 2-in-1 TF Card Adapter Why you need it - Enables quick switching between two OS images or configurations without reconfiguring devices - Helps streamline testing, development, and educational use by separating environments onto two cards Use scenarios - Software development and testing: maintain a stable baseline OS on one card and a test build on the other, switching as needed to compare results - Education and workshops: provide two ready-to-use environments for learners, allowing rapid switching between lessons or projects - Home media and hobby projects: keep a dedicated OS for media tasks and another for retro gaming or experiments, switching when you need to change tasks Notes - Designed for use in cases with accessible TF card slots - No additional software required; use your existing Raspberry Pi setup and SD cards to run two separate systems