Instruction: Given the title, description, feature, price, and brand of a product and a set of target attributes, extract the value of each target attribute from the product information. Output the extracted value and the corresponding source (e.g., title or feature) denoting where the value is extracted.

Input:
Product title: Dpower 5.1A/26W 3-Port Portable Car Charger for iPhone, iPad; Samsung Galaxy S-series; HTC; Nexus; Nokia; Kindle Fire HD and More, Black+Silver
Product description: Color: Black+Silver Features: - The charger has approved by RoHS, CE, and FCC. - It will work well with your device's battery; the charging process will stop automatically when the battery is full charged. -The charger could prevent damages from overheating, and overcharging. - Made flameproof materials. Specifications: Input: DC 12-18V Output 1: DC 5V, 2.1A Output 2: DC 5V, 2.0A Output 3: DC 5V, 1.0A Product Dimensions: 2.36" x 1.38" x 0.98" Color: White+Silver and Black+Silver Popular Compatible Models: Apple: iPhone 6, 5S, 5C, 5, 4S, 4; iPads; iPods touch; iPod nano Android: Samsung Galaxy S5, S4, S3, S2, Galaxy Note 4, 3, 2;HTC One Plus, One M8, Ace, M7, Mini, M4, X, V, S;Google Nexus 5, 7, 8, 10;Motorola X, Droid Razr, Maxx;Sony Xperia Z2 Other Devices: Kindle Fire HD,PSP,GPS,MP3/MP4,Cameras,Bluetooth Speakers/Headset,Battery Cases,Power Banks and more. Package Includes: 1 x 3 Ports 5.1 A Car Charger
Product feature: High-quality and Safe: High quality flameproof material and anti-oxidation aluminum pull tab. Charging process will stop automatically when the battery is full charged., 3 USB Ports: 3 USB 5.1A ports (2.1A, 2.0A, 1.0A separately) can charge 3 electronic devices in your car simultaneously. Fit nicely and firmly into the power socket., Wide Compatibility: Compatible with iPhone, iPad, iPod, Samsung, HTC, MP3 players, digital cameras and all other smart-phones or digital devices., LED Indication: Easy-to-see LED indicates the conditions of the USB charger, connected or not connected., Approved By: RoHS, CE and FCC
Product brand: D Power
Target attributes: Maximum Output
Answer: attribute: maximum output
value: 5v
source: product description