Lenovo ThinkPad 90W AC Adapter - 20V 4.5A Power Supply 42T4425

The Lenovo ThinkPad 90W AC Adapter (42T4425) delivers 90 watts of reliable power for ThinkPad notebooks equipped with the 7.9mm round barrel connector. Unlike generic replacements, this adapter is engineered for the specific voltage and current demands of ThinkPad T, X, L, and W series systems, ensuring stable operation during intensive tasks.

Highlights

• Output: 20 V, 4.5 A, 90 W
• Input: AC 100-240 V, 50/60 Hz
• Round barrel connector (7.9mm x 5.5mm with center pin)
• DC cable length: 1.8 m
• Built-in overload, over-voltage, and short-circuit protection
• Energy efficiency Level VI
• Black ABS plastic housing

In daily use

Plug the adapter into any standard wall outlet and connect the barrel plug to your ThinkPad. The 1.8 m DC cable gives you flexibility at a desk or in a meeting room. The adapter keeps your notebook charged under full load, and its protection circuits guard against power fluctuations.

Full specifications

• Product type: AC power adapter
• Input voltage: AC 100-240 V
• Input frequency: 50/60 Hz
• Output power: 90 W
• Output voltage: 20 V
• Output current: 4.5 A
• Connector type: round barrel (7.9mm x 5.5mm with center pin)
• DC cable length: 1.8 m
• Protection features: overload, over-voltage, short-circuit
• Energy efficiency: Level VI
• Colour: black
• Material: ABS plastic
• Operating temperature: 0°C to 40°C
• Storage temperature: -20°C to 65°C
• Humidity range: 8% to 80% non-condensing
• Compatibility: Lenovo ThinkPad T, X, L, W series with 7.9mm round tip

Final note

A dependable 90W power solution for your ThinkPad, built to handle daily charging and heavy workloads without compromise.