1Scope of Application: Suitable for laptop DDR4. 5 Way Voltage Shall Be Complete 2Safety Design : Using patch components, no hurt to your hands , to ensure stable operation 3High quality: Light weight, easy installation , effective heat dissipation efficiency, to ensure stable operation 4Excellent Performance: Reversed insertion or misinsert will not burn any parts after power on 5Good Choice: It is a good choice to repair the computer notebook , supports simultaneous operation of multiple tasks, and improves efficiency Item Type: Laptop DDR4 Tester Material: ABS, Electronic Components Product Voltage: VTT=0.6V VDDSPD=3.3V VDD=1.2V VPP=2.5V VREFCA=0.6V Battery Capacity: 200mAh Button Battery CR2032 ( with Supporting Battery) 1 x LaptopDDR4Tester 1 x Battery Delivered with the battery