Lenovo 4X20S56701 power adapter/inverter Indoor 170 W Black

The Lenovo 4X20S56701 (ThinkPad 170W Slim) AC power adapter delivers reliable indoor power for compatible ThinkPad mobile workstations and laptops. Featuring a slim, compact black housing and a 1 m cable, this adapter is designed as a replacement or spare unit that meets multiple international safety and certification standards (C/UL CB/CE/PSE/IRAM NOM/NRCan, FCC, ICES).

Advantages

The slim and small design reduces bulk while maintaining 170W output suitable for high-performance mobile workstations. Certified by major international agencies, it ensures compliance with safety and electromagnetic standards. A compact footprint (77 mm × 150 mm) and 1 m cable length make it easy to store and position in typical indoor environments.

Suitable for

• ThinkPad mobile workstations and compatible Lenovo laptops requiring a 170W Slim AC adapter
• Users needing a replacement or spare power adapter for travel or office use
• Indoor desktop or mobile setups where a compact power brick is preferred

Key specifications

• Manufacturer: Lenovo
• Model / MPN: 4X20S56701
• Output power: 170 W
• Input voltage: 100–240 V AC
• Cable length: 1 m
• Colour: Black
• Weight: 0.44 kg
• Dimensions (W × D): 77 mm × 150 mm
• Certifications: C/UL, CB, CE, PSE, IRAM, NOM, NRCan, FCC, ICES

How to use

Connect the adapter to an appropriate AC mains outlet matching the specified 100–240 V input. Plug the output connector into the compatible power port of your ThinkPad or Lenovo laptop until it seats securely. Ensure the connection is firm before powering on the device. For best results, position the adapter on a stable, well-ventilated surface and avoid covering the unit while in use.

Recommendations

Use only with compatible Lenovo/ThinkPad models that accept a 170W Slim adapter. Do not expose the adapter to moisture, extreme temperatures, or heavy mechanical stress. If the cable or housing is damaged, discontinue use and replace the adapter with a genuine Lenovo part (MPN 4X20S56701).