Translation guide
SD is an abbreviation for 'Secure Digital', a type of memory card. In Japanese, it is referred to using the same abbreviation or the full term.
Referring to the physical memory card format
The most common and natural way to refer to an SD card in Japanese.
This SD card has a large capacity.
A slightly more formal or technical term, often used in specifications.
Please insert the SD memory card.
The abbreviation alone is sometimes used in technical contexts, but it's less common in everyday speech.
This device supports SD.