Features 1、Support full range of Macbook quick recharging from 2008 to 2023. 2、Support the power meter to see the current, and help maintenance enthusiasts quickly judge the motherboard fault. 3、Support quick recharging and singleboard startup with T2chip and M1chip. 4、Add LCD digital display (when using USB cable, you can see the voltage input from the motherboard through the display. 5、The LCD on/off switch is mainly used to control the LCD NixieTube (when the T heads or L heads is used, the display of the LCD NixieTube can be turned off). 6、It has five protections: overcharge protections, over-current protections, over-voltage protections, constant temperature protections and short-circuit protections. Specification Support the whole series of Macbook boards booting into the system (to solves the problem that the battery is not installed, the signal of "BATLOW" which leads to the problem of not starting the machine). Features: Support full range of Macbook quick recharging from 2008 to 2023. Support the power meter to see the current, and help maintenance enthusiasts quickly judge the motherboard fault. Support quick recharging and singleboard startup with T2chip and M1chip. Add LCD digital display (when using USB cable, you can see the voltage input from the motherboard through the display. The LCD on/off switch is mainly used to control the LCD NixieTube (when the T heads or L heads is used, the display of the LCD NixieTube can be turned off). It has five protections: overcharge protections, over-current protections, over-voltage protections, constant temperature protections and short-circuit protections. Specifications: Main color: blue Material: aluminum alloy Item weight: 310g / 10.9ounce Package size: 213 * 116 * 26mm / 8.4 * 4.6 * 1.0in Package weight: 700g / 1.5lb Packing List: 1 * Power Boot Control Line Package List 1 * Power Boot Control Line