Power adapter inverter Lenovo 42T5129 90W Indoor, 100–240V, Black, 50×126×30 mm

Lenovo 42T5129 is a compact 90 W indoor power adapter and inverter designed to deliver regulated DC power to compatible Lenovo notebooks. With a universal input range of 100–240 V, this black adapter converts AC mains power into stable output suitable for charging laptops in office, home, or travel settings. The adapter’s enclosure measures 50 × 126 × 30 mm, offering a small footprint that fits easily into laptop bags and workspace setups where a reliable external power supply is needed.

Advantages

The adapter provides consistent 90 W power output and automatic handling of a wide input voltage range, eliminating the need for manual voltage selection. Its compact dimensions and lightweight design reduce bulk when carried with portable devices. Built to supply regulated power, it helps maintain stable laptop operation and charging performance under variable mains conditions. The black finish integrates unobtrusively with common laptop and accessory colors.

Suitable for

• Charging compatible Lenovo laptops and notebooks that accept a 90 W external adapter
• Office workstations requiring a compact external power source
• Travel and remote work where universal 100–240 V input is necessary
• Replacing lost or damaged indoor laptop power adapters with the same power rating

Key specifications

• Power output: 90 W
• Input voltage range: 100–240 V AC
• Intended use: indoor AC-to-DC power conversion for laptops
• Color: black
• Physical dimensions: 50 × 126 × 30 mm
• Function: regulated DC power delivery for notebook charging

How to use

Connect the adapter to an appropriate mains outlet within the 100–240 V range, then attach the output connector to the laptop’s power input socket designed for external adapters. Ensure the connector is fully seated and monitor the laptop’s charging indicator to confirm power delivery. Use the adapter on a stable, flat surface and avoid covering it with fabrics or objects while in operation to allow heat dissipation. Disconnect from mains and laptop before storing.

Usage recommendations

Use the adapter only indoors and in dry environments. Verify compatibility with your laptop’s required power and connector type before use. Do not use adapters or cables that are visibly damaged; replace them to prevent electrical hazards. For optimal performance, keep ventilation around the adapter clear and avoid prolonged use on soft surfaces that can trap heat.