The SDSDUNR-256G-GN3IN is listed as a SanDisk Ultra 256GB SDXC memory card for digital cameras and other devices with a full-size SD card slot.
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Product specifications
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Model: SDSDUNR-256G-GN3IN
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Brand: SanDisk
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Series: Ultra
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Capacity: 256GB
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Format: SDXC (full-size SD card)
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Speed class: Class 10 (C10)
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Interface: UHS-I
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Maximum read speed: 100 MB/s
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Write speed: Not specified in your description
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Warranty: 7 years, according to your description; regional terms may vary.
SanDisk Ultra SD card comparison
| Capacity | Model | Maximum read speed | Warranty stated |
|---|---|---|---|
| 32GB | SDSDUNR-032G-GN3IN | 100 MB/s | 7 years |
| 64GB | SDSDUNR-064G-GN3IN | 100 MB/s | 7 years |
| 128GB | SDSDUNR-128G-GN3IN | 100 MB/s | 7 years |
| 256GB | SDSDUNR-256G-GN3IN | 100 MB/s | 7 years |
Key takeaway: The 256GB model offers eight times the storage of the 32GB version, with the same advertised maximum read speed.
Compatibility note: This is a full-size SDXC card, not a microSD card. Verify that your device supports SDXC. The 100 MB/s figure is the maximum advertised read speed, not the guaranteed write speed.