Sony Vaio PCG-FX203K Instruction & Operation Manual page 44

Using your notebook
Re-inserting the floppy disk drive
To re-insert the floppy disk drive, proceed as follows:
1 Turn off the computer.
2 If another device is in the multi-purpose bay (1), remove the device.
3 Insert the floppy disk drive (2) into the multi-purpose bay with the metallic part up.
4 Continue pushing the drive into the bay until the release lever locks into place.
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