Oracle Sun Fire X2270 M2 Service Manual page 65

Remove the three screws securing the I/O board to the hard drive (HD) cage.
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To remove the I/O board, lift the board high enough to clear the standoffs and then slide the
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board toward the rear of the server until the connectors are clear.
Remove the cable connected to the I/O board.
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"How to Install the I/O Board" on page 66
Next Steps
Replacing the Front I/O Board (FRU)
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