Camera & Tech Hardware
SD & MicroSD Speed Class Decoder
Decipher every symbol stamped on your memory card: V30, V60, V90, U3, A2, and UHS-II. Ensure smooth 4K recording without dropped frames.
Select An SD / MicroSD Speed Symbol:
Speed Class Specification
V30 (Video Speed Class 30)
⚡ 30 MB/s
Best Device Fit:
DJI Drones, GoPro Hero 11/12/13, 4K 60fps
Max Video Quality:
High-bitrate 4K video recording up to 100-150 Mbps
Technical Verdict:
Guarantees continuous sustained write speed without dropped frames in high-bitrate action footage.
What Do Roman Numerals I and II Mean? (Bus Speeds)
UHS-I
Up to 104 MB/s
Single row of 9 gold pins
UHS-II
Up to 312 MB/s
Double row of 17 gold pins on back
SD Express
Up to 985 MB/s (PCIe / NVMe)
PCIe NVMe interface protocol