Instruction: Parse the product information to locate the target attribute, and then provide the extracted value of the target attribute and its source in the output, specifying None if the attribute is not present.

Input:
Product title: Cinpel VGA Box Cable for SEGA DreamCast
Product description: Main of the VGA cable with anti-interference "RH CORE". High definition display perfectly. Make sure ur display support 640x480 resolution. Compatible with SEGA Dreamcast
Product feature: Brand new and high quality, Compatible with for SEGA Dreamcast, Third party product, Cable length: approx 1.4M, Color: black
Product brand: by Cinpel
Target attributes: Audio Channels
Answer: attribute: audio channels
value: None
source: None