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The following will help you identify Seagate external storage power supplies.
Please click on the name of your product to see an image of its power supply.
Direct-attached storage drives
Backup Plus Desktop and Backup Plus for Mac Desktop GoFlex Desk and GoFlex Desk for Mac (most models) (some models) Expansion External Drive (newer model) (older model)
Wireless Plus Seagate Central Business NAS 4-bay Business NAS 2-bay Business NAS 1-bay GoFlex Satellite (image of the power supply) (image of the barrel) GoFlex Home - most power supplies will include the interchangeable connector GoFlex Home - some power supplies in the US will have a fixed connector GoFlex Net BlackArmor NAS 440 / 420 BlackArmor NAS 220 (see here a close-up of the label) BlackArmor NAS 110 (see here a close-up of the label) FreeAgent DockStar (may come in black or white depending on the product)
Home Entertainment media devices
GoFlex TV (see here a close-up of the label) DVR Expander (see here a close-up of the power connector on the back of the device) FreeAgent Theater Plus FreeAgent Theater
Legacy direct-attached storage drives
FreeAgent Desk FreeAgent Desk for Mac Seagate BlackArmor WS 110 FreeAgent Xtreme FreeAgent Pro Classic(single pin) with power switch FreeAgent Desktop Classic (single pin) without power switch Seagate External Drive (image of power supply label) (image of drive back) Seagate Pushbutton External/eSATA drive (single pin power) (image of power supply) (image of drive back, model A) (image of drive back, model B) Seagate Pushbutton (4-pin power) (image of power supply) (image of drive back, model A) Seagate Portable drive (The power supply was not bundled with the drive because this drive normally derives its power from the USB Y-cable; see Document ID: 174571 for more information.)