RAYASLOT RTP SLOT On the card itself, though, the UHS Speed Class is denoted by the Roman numeral "I" to the right of the SD logo. You'll see the Speed Class for an SD card next to its SD logo as a number inside a circular "C" shape. That means the SD card has circuitry designed to read and write to memory at speeds up to 312 MB per second. However, speed is very important when it comes to shooting and playing back video, particularly in high-definition (HD).|{3|4|5|6|7|8|9|10|Three|Four|Five|Six|Seven|Eight|Nine|Ten} {Factors|Components|Elements} That {Affect|Have an effect on} Slot Zora4d