Power Adapter Lenovo 4X20M26257

The Lenovo 4X20M26257 power adapter is a compact external power supply designed for charging and powering compatible laptops and portable devices. It accepts a wide input voltage range of 100–240 V and offers selectable DC output voltages of 5 V, 9 V, 15 V and 20 V to accommodate different device requirements. The adapter's small footprint (40 mm × 93 mm × 28.5 mm) and 0.17 kg weight make it convenient for travel, home and vehicle use, while the black enclosure provides a neutral aesthetic that fits typical work and leisure environments.

Advantages

The adapter's universal input range supports international mains voltages without the need for additional converters. Multiple DC output voltages increase compatibility with a variety of laptops and small electronics, reducing the number of separate chargers required. Its compact dimensions and low weight simplify storage and transport, and the durable housing in black finish resists visible soiling and integrates with common device colors. Designed for indoor and in-car use, it balances portability with functional flexibility.

Suitable for

• Charging and powering compatible Lenovo laptops and other portable devices that accept 5 V, 9 V, 15 V or 20 V DC input
• Use while travelling, commuting or in vehicle environments where a compact adapter is needed
• Replacing a lost or damaged original adapter with a compact alternative for everyday use

Key specifications

• Input voltage: 100–240 V AC
• DC output voltages: 5 V, 9 V, 15 V, 20 V
• Form factor: external compact adapter
• Dimensions: 40 mm (W) × 93 mm (D) × 28.5 mm (H)
• Weight: 0.17 kg
• Colour: black

How to use

Connect the adapter to a compatible mains outlet using the appropriate power cord, then attach the DC plug to the device's power input matching the required voltage setting. Verify the device's required voltage before connecting and ensure the adapter's output selection corresponds to the device specification. Use the adapter on a stable, ventilated surface and avoid covering it during operation to prevent overheating. Disconnect from mains and the device before cleaning or when not in use for extended periods.

Usage recommendations

Before each use, confirm device voltage compatibility and inspect cables and connectors for damage. Avoid using the adapter in excessively humid or dusty environments and do not expose it to liquids. For prolonged operation, place the adapter where airflow is unobstructed. If the adapter becomes unusually warm, makes noise, or emits odors, discontinue use and have it inspected by a qualified technician.