✔ 最佳答案
Sony 出既唔係 sd card, sd card is one of the model of memory card,
Sony 出既係 Memory Strick , Memory Stick Pro Duo, M2 card
k750i 係用 Memory Strick Pro Duo card
Sony and Sandisk 出既 Memory Strick Pro Duo card, k750i是可以用既.
香口膠咁既長方形物係 adaptor, 插張 Memory Strick Pro Duo card 入去,
it will become to a Memory Strick card, for old model Sony Digital Camera and
old model card reader used!