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: 2 Port USB Travel AC Charger Adapter (White) for Apple tablet
Product description: 2 Port USB Travel AC Charger Adapter (White) for Apple tablet . This Travel Charger with 2 USB Power Port is suitable for most cell phones, PDAs, portable games and music players with any USB charging cable available. Use this item to easily charge your device at home or in the office.FEATURES: Compact power source plugs design: Home wall AC plug Can be used with any USB charging cable to charge at home or in the office Great to use with any USB charging cable to quickly charge the battery of your device SPECIFICATIONS: Input: AC 100-240V Single Output: DC 5.1V-2.1A Double Output: DC 5V-1000mAh Product Color: White IMPORTANT NOTE: This Travel Charger with 2 USB power port does not come with the USB charging cable. The item should be used with your current USB charging cable (which is sold separately) Compatible With Apple The new iPad (iPad 3) iPad2 iPad WiFi iPad 3G
Product feature: Compact power source plugs design: Home wall AC plug, Can be used with any USB charging cable to charge at home or in the office, Great to use with any USB charging cable to quickly charge the battery of your device
Product brand: CellularFactory
Target attributes: Maximum Output
Answer: attribute: maximum output
value: 5v
source: product description