High-Quality 20V 4.5A 90W Lenovo Round Big Pin Laptop Power Adapter

Heavy-duty, reliable replacement AC power adapter for Lenovo ThinkPad and IBM laptops, featuring a 7.9mm x 5.5mm round yellow pin with an internal center needle, built-in surge protection, and stable power output.

Keep your Lenovo ThinkPad running smoothly with this high-efficiency 20V 4.5A (90W) AC Power Adapter. Specifically engineered for legacy Lenovo ThinkPad T, X, R, L, Edge, and IBM series laptops requiring the standard 7.9mm x 5.5mm Round Big Pin with Yellow Center, this charger delivers continuous, stable voltage. Built with flame-retardant materials and an integrated multi-protection smart IC chip, it protects your notebook against voltage surges, over-current, short circuits, and internal overheating.

Key Features

• High-Power Output: Delivers a stable 20V 4.5A (90W) supply, fully backwards compatible with 65W (20V 3.25A) Lenovo round-pin systems.

• Standard 7.9mm x 5.5mm Big Pin: Round connector tip with a distinctive yellow rim and center signal pin ensures a tight, secure connection.

• Advanced Circuit Protection: Integrated smart chip safeguards against over-voltage, over-current, overload, short-circuiting, and overheating.

• Durable & Heat-Resistant: Manufactured using high-quality ABS plastic housing and strain-relieved cables for daily durability.

• Low Noise & Low Interference: Features a stable power conversion circuit that minimizes electromagnetic ripple and noise.

• Broad Compatibility: Designed for Lenovo ThinkPad T-Series (T60/T400/T410/T420/T430), X-Series (X200/X201/X220/X230), Edge, and IBM 3000 series notebooks.

Technical Specifications