“Does this have a standard 24/20 pin ATX mobo? I have been through too many computers, bought and returned (Lenovo H50, Lenovo ideacentre 700 and Dell inspiron AMD FX 8800) because they all have proprietary ATX connectors for the main power supply. The Lenovos had 10-pin connectors, and the Dell had 8. A converter exists for the 8 pin, but not the 10. So, I have heard on other forums that some inspiron models have standard ATX sockets. Is this one of them? Upgrading to a respectable GPU requires a stronger PSU, so this is most definitely of concern to me. Thanks! (Best Buy, you need to list the wattage of the PSU! It would save you a lot of time and money on returns/open box sales!!!)”