I can't see any graphic - FunAdvice's new format works rather poorly for me - but I can tell you how to find out. Open a computer. Look for the four wire connection that powers the CD or DVD drive. That connection, about an inch long and a quarter inch thick, is a molex connection.
Better, easier and faster to simply add the photo here, instead of linking elsewhere.
Yes, that does look like a 4 pin connector.