Is the Power-Link designed for routine usage?
There are several versions of SRAMs power links. The original versions were intended for reuse, and you would have no problem using them in that manner. If you have an 8 or 9 speed bike, you've got one of the original designs. 

If you have a ten speed SRAM drivetrain, then you need to look at the link and the model of the chain. SRAMs newest power links for 10 speed are not designed to be used more than once. They are sold in a 4 pack so that you have replacements to use. 

The gold power link you've pictured is either 9 speed, or one of the first 10 speed links, which is reusable. If yours is black, you have one of the newer, non reusable variety. 

If the chain is a PC-1071, PC-1091 or 1091r, this is the links it comes with, and while you can remove them, they need to be replaced with a fresh link each time you do. 

I hope that helps.