how many pins that are physically present in a USB header ?
A. 7
B.8
C. 9
D. 10
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Answer:
C. 9
Explanation:
USB headers are groups of pins on a motherboard, into which one can plug a special cable to provide USB ports on a computer chassis. In the case of USB 2, such headers will usually appear in a 2x5 grid with one corner pin missing (9 total pins). USB 3 headers are larger.