Instruction: Extract the value of the target attribute from the given product information and output it along with the corresponding source.

Input:
Product title: Aastra AC Power Supply
Product description: 48 Volt power supply new in box
Product feature: A quality product by AASTRA USA INC, A quality product by AASTRA USA INC, A quality product by AASTRA USA INC, A quality product by AASTRA USA INC, A quality product by AASTRA USA INC
Product brand: AASTRA USA INC
Target attributes: Maximum Output
Answer: attribute: maximum output
value: 48 volt
source: product description