| 摘要 |
PROBLEM TO BE SOLVED: To easily switch hard disks by change-over switches in a front face build plurally in a personal computer, although the hard disk is physically switched by manual work presently when the hard disks connected to an IDE interface inside the personal computer are switchedly used. SOLUTION: This device is realized by switching only four signal lines required for change out of cables of 40 pins connected from the IDE interface to the hard disks inside the personal computer, using a switch.
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