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: HP - HP PAVILION PYRITE GL8E SYSTEM BOARD
Product description: HP PAVILION PYRITE GL8E SYSTEM BOARD
Product feature: HP Original Part Number 5188-5470, Replacement Part Only. No accessories, cables or manuals are included unless otherwise noted, Please check your original part to match your part number to the part number listed in the title for this item
Product price: $29.99
Product brand: HP
Target attributes: Form Factor
Answer: attribute: form factor
value: None
source: None