You can use SD cards to back up data on your Surface or increase the storage capacity of your device. For information on what type of SD card is supported on your Surface, see below:
Surface Laptop models, Surface Laptop Go, Surface Laptop Studio, Surface Pro 8 and Surface Pro X models don't have a built-in SD card reader.
Surface Pro 4 or later models and Surface Go models have a microSD card slot capable of reading and writing SDXC cards with UHS-I read/write speeds.
Note: Surface Pro 7+ with LTE Advanced doesn't have a microSD card slot.
Surface Studio models have a full-size SD card interface capable of reading and writing SDXC cards with UHS-I read/write speeds.
Surface Book models have a full-size SD card interface capable of reading and writing SDXC cards with both UHS-I and UHS-II read and write speeds.
Note: If your device doesn't have an SD card reader or you need faster read and write speeds, you can attach and use a USB card reader.
See more at the Removable Storage section of Surface Storage Options
