The connector at one end of the cable has two rows of holes, one of which is blocked with a plug, as shown below.
The ribbon cable socket on the back of the drive has two rows of pins. In one of the rows, a pin is missing.
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| illi |
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| ‘I(’ | ‘(c’ |
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| I |
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| I, | I |
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| I II |
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| II, |
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nmBmmmmmmmmmmmmm~m~m
II nmmmmmmmm~mmmmmmmmmm‘blocked hole
ribbon cable socket
‘missing pin
Installing and Removing Disk Drives B - 1 3