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: Hitachi HTS545050A7E380 MLC: DA6040 P/N: 0J31255 500GB
Product description: Model number: HTS545050A7E380, Serial number: 140619TM85A3353LYWLL, Part number: 0J31255, MLC: DA6040, Date: 19 JUN 14, Made in China, 220 0A90351 01 on the PCB, 0J24297 DA5258A on the barcode sticker, TM8 5A3 - left barcode sticker on the short side of the hard drive, SKU: 27053
Product feature: Actual picture of the item, Full specification of the product below, Product is in 100% working condition, 30 days money back guarantee, Customer support +1 (800) 803-0042
Product brand: Hitachi
Target attributes: Rotational Speed
Answer: attribute: rotational speed
value: None
source: None