ITEM NAME:2 In 1 Dual System Tf Micro- Sd Card Adapter Memory Board For Raspberry Pi V6P1 2 In 1 Dual System Tf Micro- Sd Card Adapter Memory Board For Raspberry Pi V6P1 Model Number: Dual TF Card Adapter Demo Board Type: ARM Compatible with: Raspberry Pi 3 Model B / 2B / Pi Zero / Zero W Double Micro- TF card slot board for raspberry pi dual system, design for players who need frequent task-switching between two systems. for example, change Raspbain OS to Ubuntu OS. Plug and play with Micro- slide switch to switching the system instead of changing 2 different Micro- TF card, simplify your operation Install Dual TF Card Support 2 system for a board Suitable for mostly case which has tf card slot colour:blue Material:PC+ metal Package Contents: 1 x 2-in-1 TF card Adapter Note: the raspberry pi 3 model b and the case is not included. Please turn off your Raspberry Pi power, then change the system, switch when power on will damage your system in the TF Card.