Need Help Plugging Molex Cable Into PSU

Solution
usually those are male/female blocks that you insert as mini-extensions or to "interrupt" the connection between PSU and a hard drive for example. sometimes they're tough to insert fully if one of the four connection points is slightly out of line as you (inadvertently) press on the wires.

giantbucket

Dignified
BANNED
usually those are male/female blocks that you insert as mini-extensions or to "interrupt" the connection between PSU and a hard drive for example. sometimes they're tough to insert fully if one of the four connection points is slightly out of line as you (inadvertently) press on the wires.
 
Solution