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Max Official Capacity: 32GB (Tested up to 32GB (Plug & Play) / 128GB (With PC FAT32 tool))
Setup / Formatting: FAT32 ONLY
Minimum Speed Class: Class 10 / A1
Technical Note: Cards 64GB+ ship as exFAT and won't be detected unless manually reformatted to FAT32 on a computer.
📋 Official Spec / Manual Source: Bambu Lab Official Wiki — MicroSD Card FAQ & FAT32 Formatting Guide ↗
Need help formatting or fixing an error? See our guides for Windows 10/11, Mac, Dashcam/Camera Card Error Fix, or Garmin Card Degraded Fix.
Get a 32GB SanDisk Ultra card for instant plug-and-play (or 64GB+ if you format it to FAT32 on a PC). Bambu Lab A1 / A1 Mini / P1S / X1 Carbon 3D Printer uses a 32GB microSD / SD Card rated Class 10 / A1. Nintendo 3DS/2DS/Wii, 3D printers, Flipper Zero, and field recorders require 'FAT32' formatting. A 32GB card works straight out of the box with no PC tools needed.
The official maximum supported capacity for Bambu Lab A1 / A1 Mini / P1S / X1 Carbon 3D Printer is 32GB (tested up to 32GB (Plug & Play) / 128GB (With PC FAT32 tool)). For the best balance of price and reliability, our recommended sweet-spot size is 32GB.
32GB ≈ 25–40 3DS/Wii games, thousands of 3D printer G-code files, or 45+ hours of WAV audio. Choosing 32GB gives plenty of headroom without overpaying.
For zero-hassle plug-and-play without using a computer formatting tool, buy the 32GB card. Cards 64GB+ ship as exFAT and won't be detected unless manually reformatted to FAT32 on a computer.
Setup requirement: FAT32 ONLY. 32GB cards come factory pre-formatted in FAT32, so you can insert the card straight out of the packet into Bambu Lab A1 / A1 Mini / P1S / X1 Carbon 3D Printer with zero computer formatting needed.
Yes. Unbranded or counterfeit marketplace cards frequently spoof their capacity or fail to sustain Class 10 / A1 write speeds, leading to corrupted recordings or 'Card Error' warnings. Stick to genuine, branded cards from a reputable retailer to ensure full manufacturer warranty coverage.
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