I have a Silverstone Tek 500W(ST50F-ESG) that only has 1 PCI-E, question will I be able to use a MOLEX-to-PCI-E or SATA-to-PCI-E adapters? TIA.

Silverstone Tek 500W(ST50F-ESG)
Product link
http://www.silverstonetek.com/product.php?pid=460