Sony VGC-LT30 Series - Manual (Page 126)

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Upgrading Your VAIO Computer
Adding the Hard Disk Drive
Your computer is equipped with an open internal bay to hold an additional 3.5-inch hard disk drive.
Review the manufacturer's information provided with your new hard disk drive before attempting to install it in the computer.
!
Some hard disks are not compatible with your computer. Contact the manufacturer of your hard disk for compatibility with VAIO computers.
Make sure you unplug your computer and peripheral devices from the power sources before installing or removing a hard disk. Installing or removing
a hard disk while your computer is plugged to its power source may cause damage to the computer and the peripheral devices as well as the hard disk.
If you need assistance to install a hard disk, contact an authorized Sony Service Center. To find the nearest center or agent, see Sony Support
Information (page 185) .