DC Jack Female Screw Type CCTV Female DC Power adapter – 5.5/2.1mm jack to screw terminal block If you need to connect a DC power wall wart to a board that doesn't have a DC jack - this adapter will come in very handy! There is a 2.1mm DC jack on one end, and a screw terminal block on the other. The terminals are labeled with positive/negative assuming a positive-tip configuration (which is the most common) DC JACK F When the Mini Thermal Printer connect the power adapter with itself connect adapter,it need power the printer using a 5V to 12V 1.5A or higher power supply, such as wiring up a 5.5/2.1mm DC power #generic #centralized #powersupply #powerbrick #cctv #LED #power #DC12V #DC #JACK #Connector #Adapter #CCTV #Connetor #UME #COD #FreeShipping