Features: 5.5x2.5mm plug is Inner Positive(+), Outer Negative(-),3 levels of high, medium, and low battery indicator lights, 3 lights with high battery, 2 lights with medium battery, and 1 light with low battery,Charging indicator, charging red light, full to green light. Compatible Multi Devices for All in one PC,Routers, fish for tank, LED light bar products, CCTV cameras, IP cameras, LED panels, modems, car DVRs, speakers, breast pumps, and other equipment. Suitable for laptop, wifi Router ,LED Light Strip ,CCTV Camera, speaker and more 12V or 19V device. The UPS power supply is: output voltage 12V or 19V 60W(before use need to check the voltage button). There is a small switch next to the UPS input port to control the internal battery, ON to open, OFF to close, open to start the battery output, and close to close the internal battery output. When the external power supply is cut off, it will automatically switch to battery power supply, and the switching for time is 0 seconds. brand new and high quality. Specifications: Item Type: UPS Uninterrupted Backup Power Supply Material: Metal+Plastic Color: Black,White Capacity: 7500mAh 27.75Wh Size: 12.5x8x2.7cm 5.5x2.5mm female input: for DC 12V 8A or 19V 4.74A 5.5x2.5mm male output: for DC 12V 5A or 19V 3.42A Outout power cable length: 44cm Package Includes: 1 x UPS Uninterrupted Backup Power Supply note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.