● USB port is optional.
● Output voltage adjust automatically.
● Charge most brands laptops in market with multiple easy-to-install tips.
● Reliable “Must Haves” backup power adapter in home or office.
● LED charging indicator shows charging status.
● Output voltage from DC 9.5V to 2.4V which can adjust automatically.
● Full safety design:Built-In protection against Over Current,Over Voltage,Over Temperature Over Load and Short-Circuit.