usb 2.0? 3.0?


๊ฒ€์ •์ƒ‰ ํฌํŠธ๋ž‘ ํŒŒ๋ž€์ƒ‰ ํฌํŠธ ๊ตฌ๋ถ„๋˜์–ด ์žˆ๋˜๋ฐ ์ด๊ฑฐ ๋‘๊ฐœ ์ฐจ์ด๊ฐ€ ์žˆ๋‚˜์—ฌ?