Why can't switch off sata ports individually on DQ87PG if Intel told me that is a feature on that chipset ???
http://www.intel.com/content/dam/www/public/us/en/documents/product-briefs/q87-q85-chipset-brief.pdf
SATA Port Disable Enables individual SATA ports to be enabled or disabled as needed. This feature provides added protection of data
by preventing malicious removal or insertion of data through SATA ports. Especially targeted for eSATA ports.