Instruction: First, identify the target attributes from the provided list. Then, scan the product title, description, feature, and brand to extract the values associated with each target attribute. Finally, create a list of dictionaries, each containing the extracted attribute, its corresponding value, and the source where it was found.

Input:
Product title: LPM2-20-P4 400W Power Supply for Compaq 0950-2800, 0950-3426, 0950-3623, 0950-3751, 0950-3961, 0950-4097, 0950-4106, 0950-4107, 0950-4270, 5184-3961, 0950-4107, 5185-2974, Presario 6000T CTO, 6000Z CTO, 6288AP, 6300US, 6301RSH, 6310US, 6315CL, 6320US, 6324SE, 6325CL, 6326SE, 6330US, 6331RSH, 6333OM, 6350US, 6351RSH, 6370US, 6400NX, 6401RSH, 6404US, 6410NX, 6412US, 6415CL, 6420NX, 6421US, 6422SE, 6430NX, 6433US, 6435CL, 6450NX, 6454NX, 6470NX, 6473SA, 6475CL, 6485CL, 6000, Deskpro 1000, 333818-001
Product description: DEMAND THAT ALL COMPETING VENDORS SUPPLY EXACTLY THE POWER SUPPLY ADVERTISED. DON'T LET THEM TELL YOU THAT YOU ARE GETTING SOMETHING "BETTER", "UPGRADED", OR "HIGHER QUALITY". LPM2-20-P4 400W Power Supply for Compaq 0950-2800, 0950-3426, 0950-3623, 0950-3751, 0950-3961, 0950-4097, 0950-4106, 0950-4107, 0950-4270, 5184-3961, 0950-4107, 5185-2974, Presario 6000T CTO, 6000Z CTO, 6288AP, 6300US, 6301RSH, 6310US, 6315CL, 6320US, 6324SE, 6325CL, 6326SE, 6330US, 6331RSH, 6333OM, 6350US, 6351RSH, 6370US, 6400NX, 6401RSH, 6404US, 6410NX, 6412US, 6415CL, 6420NX, 6421US, 6422SE, 6430NX, 6433US, 6435CL, 6450NX, 6454NX, 6470NX, 6473SA, 6475CL, 6485CL, 6000, Deskpro 1000, 333818-001
Product feature: LPM2-20-P4 400W Power Supply for Compaq 0950-2800, 0950-3426, 0950-3623, 0950-3751, 0950-3961, 0950-4097, 0950-4106, 0950-4107, 0950-4270, 5184-3961, 0950-4107, 5185-2974, Presario 6000T CTO, 6000Z CTO, 6288AP, 6300US, 6301RSH, 6310US, 6315CL, 6320US, 6324SE, 6325CL, 6326SE, 6330US, 6331RSH, 6333OM, 6350US, 6351RSH, 6370US, 6400NX, 6401RSH, 6404US, 6410NX, 6412US, 6415CL, 6420NX, 6421US, 6422SE, 6430NX, 6433US, 6435CL, 6450NX, 6454NX, 6470NX, 6473SA, 6475CL, 6485CL, 6000, Deskpro 1000, 333818-001, DEMAND THAT ALL COMPETING VENDORS SUPPLY EXACTLY THE POWER SUPPLY ADVERTISED. DON'T LET THEM TELL YOU THAT YOU ARE GETTING SOMETHING "BETTER", "UPGRADED", OR "HIGHER QUALITY".
Product brand: Linkworld
Target attributes: Power Output
Answer: attribute: power output
value: 400w
source: product description
attribute: power output
value: 400w
source: product title
attribute: power output
value: 400w
source: product feature