- Media type
- Memory card
- Capacity
- SD : Up to 2 GB SDHC : over 2 GB to 32 GB SDXC : over 32 GB to 2 TB SDUC : over 2 TB to 128 TB
- Block size
- Variable
- Read mechanism
- Standard : 12.5 MB/s High-speed : 25 MB/s UHS-I : 50 MB/s or 104 MB/s UHS-II : 156 MB/s full-duplex, or 312 MB/s half-duplex UHS-III : 312 MB/s full-duplex, or 624 MB/s full-duplex Express : ≥ 985 MB/s full-duplex
- Write mechanism
- Variable
- Standard
- SD Standard
- Developed by
- SD Association
- Dimensions
- Standard : 32.0×24.0×2.1 mm (1.260×0.945×0.083 in) , 1,612.8 mm (0.09842 in ) Mini : 21.5×20.0×1.4 mm (0.846×0.787×0.055 in) , 602 mm (0.0367 in ) Micro : 15.0×11.0×1.0 mm (0.591×0.433×0.039 in) , 165 mm (0.0101 in )
- Weight
- Standard : ~2 g Mini : ~800 mg Micro : ~250 mg
- Usage
- Portable devices, such as digital cameras and mobile phones (including most smartphones)