The GTX 560 video card reqwuires two 6 pin power cables to work , the links above show what cables will most likely come with the card and you can take one of them to make the second 6 pin connector. There is also a splitter cable that you can get to make two connectors out of one.
You may not be able to buy from Newegg but the links are for your reference to see what you need. If you can aford it you could buy a power supply with two 6 pin connectors or if not you can use the adaptors.
minimum requirement is 500W
But adapters will b ok??
gtx 560 non ti requires 450w power supply Soi should go with Crosair 450w 1x6 pin Power Connector And us the adapters from the box
adater Ok is your PSu 500W .. 450 will get hot and maybe poor power
The minimum power supply requirement for the 560 is 450w and you can use the one 6 pin that comes with the power supply and the adaptor.
ohhoooo 500w power badly needed ??
It would be better to go with a 500w power supply but if the cost is too much then the 450w will work and power that video card.