Dell MDD7C 90W USB-C Power Adapter for Laptops and Compatible Devices

Dell MDD7C 90W USB-C AC adapter supplies up to 90 watts of power through a USB-C output to charge and operate compatible laptops and USB-C devices. The adapter supports standard USB-C Power Delivery profiles for efficient charging, and its compact design makes it suitable for both travel and desk use. Designed to maintain battery level during intensive tasks and to reduce downtime, the adapter provides stable power delivery for a range of compatible systems.

Advantages

The adapter delivers up to 90W of power via a single USB-C port, enabling fast charging and sustained operation of laptops that accept USB-C power input. Built-in power delivery support ensures compatibility with devices that follow the USB-C PD standard, while internal protections help guard against overcurrent, overvoltage and short circuits. Its compact form factor and lightweight construction make it convenient to carry with a laptop bag, and the universal USB-C interface reduces the need for multiple proprietary chargers.

Suitable for

• Charging and powering USB-C equipped laptops up to 90W
• Charging tablets and other USB-C devices that accept PD input
• Use as a travel charger for business trips and remote work
• Replacement or spare charger for home and office use

Key specifications

• Output power: up to 90 watts via USB-C
• Connector type: USB-C (Power Delivery)
• Supported standard: USB-C Power Delivery profiles
• Input: AC mains input compatible with standard voltages for targeted regions
• Protective features: overcurrent, overvoltage and short-circuit protection
• Design: compact, lightweight housing suitable for travel

How to use

Connect the adapter to an appropriate AC mains outlet using the supplied input lead or the integrated plug variant, then attach the USB-C cable to the adapter and to the laptop or compatible device. Ensure the device supports USB-C Power Delivery and that the cable used is rated for the required power level. The adapter will negotiate the appropriate PD profile with the device and supply the correct voltage and current up to 90W. Unplug the adapter from the mains when not in use and avoid using damaged cables or connectors.

Recommendations

Use a USB-C cable rated for high-wattage PD charging, keep vents unobstructed for passive cooling, and operate the adapter within the ambient temperature range specified by the device manufacturer. For optimal battery health, follow the laptop manufacturer’s guidance on charging practices and disconnect the adapter once the battery is fully charged when long-term continuous charging is not required.