This LOT is one piece of NEW 2.5x5.5x10mm standard Jack Plug output connector 12W Universal AC/DC 12V 1.0A Power Adapter from DVE. Model Number: DSA-15P-12US120120, designed for Dell Computer Speaker Power Supply. Please note the output plug is not a standard type, it is for a special connector on Dell Computer Speaker System.

General Spec for this unit:

• Input AC Voltage: 100V to 240V, 50-60Hz, 0.5A
  
• Output DC Voltage: 12V
• Rated Output Current: 1.0A
• Output Power: 12W
• Input Connect Type: 2-Contact Standard AC Plug used in North America
  
• Output Connector: 2.5x5.510mm Jack Plug, Center Positive (see pictures for detail)
  
• Length of the Output Wire: 72 inches.
• Size: 2.75" x 1.85" x 1.25" (70 x 45 x 28mm)
• Weight: 6.7 Oz. (190 grams)

Data sheet (please note the following data sheet has different output style) :

http://www.jameco.com/Jameco/Products/ProdDS/2151005.pdf