Sony Vaio PCG-GRX315MP Instruction & Operation Manual page 73

Connecting peripheral devices
Connecting a USB floppy disk drive
As an optional extra, you can purchase a USB floppy disk drive and connect it to your computer.
To connect a USB floppy disk drive, proceed as follows:
1 Choose the USB connector you prefer to use.
2 Plug the USB floppy disk drive cable (1) into the USB connector (2). The VAIO logo on the disk drive
should be facing up.
Your USB floppy disk drive is now ready for use.
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