Old PSU with new MoBo?

teek4

Honorable
May 28, 2013
5
0
10,510
I am doing an upgrade to most of my components and I'm spending whatever I have. And, believe me, it's not much now. So I am wondering, is my old PSU will work out with the new MOBO because I really don't want to buy a new one. PSU: LC-B350ATX 350 Watt ATX. Mobo: ASUS M5A78L-M LX.
And yeah, the PSU has a 20-pin connector while the MoBo has 24-pin. Thanks :)
* I will use the bulit-in VGA video from the MoBo, should I just go with the 20-pin or I should consider buying an adapter?