Sony PCV-R539DS VAIO Computer User Guide (primary manual) - Page 11

Front Panel Overview 7 Front Panel Overview The front panel of your VAIO Digital Studio Computer allows for access to the diskette, DVD, and CD-RW drives (PCV-R538DS and PCV-R539DS only). It also includes USB and i.LINK ports to connect USB devices, digital equipment, or other components. CD-RW Drive (PCV-R538DS and PCV-R539DS only) Diskette Drive Diskette Drive Access Indicator Light Diskette Eject Button Emergency Eject Hole DVD-ROM Drive Optical Drive Eject Button Optical Drive Indicator Light Power/Standby Switch Power/Standby Indicator Light Hard Disk Drive Access Indicator Light i.LINK USB  For your convenience, your computer includes USB and i.LINK connectors on both the front and back panels, allowing you to connect to either set of connectors. The i.LINK connector on the front of your system is a 4-pin connector.