The Dell OEM Power Companion 18000mAh Power Bank for Laptop PW7015L R7CW8 is a black power adapter designed specifically for Dell laptops. With a voltage of 19.5V, this unit is compatible with the Dell PW7015L R7CW8 model and is suitable for use with various Dell Latitude and HP ENVY laptops. The compact size of 0.87 inches in height makes it convenient for travel, providing a reliable power source for your devices on the go. Made in China, this power bank is a high-quality product designed to meet your computing needs.