Which of the following can be used to achieve the highest transfer rate for an external hard drive?（）

A. Bad memory
B. Video card
C. Faulty chipset
D. FDD

A. C:\Documents and settings\User1\Desktop
B. C:\Users\User1\Desktop
C. C:\windows\System32
D. C:\Users\User1

A. PCI
B. Mini PCI
C. ISA
D. PCIe 1x