UHS-I U1 memory cards

UHS-I Class 1 (U1)

— the simplest UHS class. The UHS-I generation provides read speeds up to 104 Mbps from the card (in earlier versions this speed is lower, but these versions are practically not used in modern cards). In turn, Class 1 guarantees a recording speed of at least 10 MB/s — this is enough for shooting 4K video at up to 60 fps and Full HD video at up to 120 fps (depending on the codec). In fact, these recording capabilities are similar to the video recording class V10 (see “Video Recording Class”).