Dell 90W 19.5V power supply model CF874 for compatible laptops

Dell AC adapter CF874 delivers 90W of power at 19.5V to charge and run compatible Dell laptops and devices. This external power supply provides a stable DC output suitable for daily use, battery charging and operation while the device is under load. The adapter is designed as a replacement or spare for original Dell adapters and connects to laptops via the matching barrel connector. Its compact rectangular brick and cord arrangement make it convenient for home, office and travel use.

Advantages

The adapter provides a consistent 19.5V, 90W output that supports regular laptop workloads and recharging. Built-in protection against overcurrent and short-circuit helps protect the connected device. The external design keeps heat away from the laptop while supplying power and charging the battery. Its compatibility with a range of Dell laptops makes it a practical replacement or backup unit.

Suitable for

• Charging compatible Dell laptops and powering them during use
• Replacing a lost or damaged original adapter
• Keeping as a spare adapter for travel or office
• Providing stable power for everyday computing tasks

Key specifications

• Output voltage: 19.5 V DC
• Rated power: 90 W
• Output current: up to 4.62 A
• Connector type: compatible Dell barrel plug
• Form factor: external inline power brick with AC input cord
• Built-in protection: overcurrent and short-circuit protection

How to use

Connect the AC input cord to a suitable mains outlet, then plug the adapter’s barrel connector into the laptop’s power jack until it seats securely. Ensure the laptop’s charging indicator shows charging or that the operating system recognizes external power. For continuous use, allow ventilation around the adapter and avoid covering the brick to reduce heat buildup. Disconnect the adapter by first unplugging from the laptop and then from the mains when not in use.

Recommendations

Use the adapter with laptops that specify a 19.5V, up to 90W power source and a matching barrel connector. Avoid using adapters with incompatible voltage or connector types. Keep the adapter dry, avoid extreme temperatures, and inspect cords for damage regularly. For best results, use official or certified connectors and ensure the mains supply matches regional requirements.