I have one on my bench but one problem is on some of the supplies a fast change in the load like hooking up something big will trip them out.
If you restart it with the load connected it is OK again
These supplies do need a start wire grounded to get them going. On the old AT types (2 flat board connectors)it is hooking the red and black together in that 3 pin plug (the cable with a white too)
On the ATX with the rectangular 2 row board connector it is the green wire, usually #14, unless it is a Dell. They use a different pinout but it is still the green wire
