Description�� What “20 V 4.5 A USB‑C Lenovo Charger” MeansOutput: 20 volts at 4.5 amps, which equals about 90 watts (W) of power — a standard level for many laptops.Connector: USB‑C (Power Delivery) — this uses the USB‑C port with Power Delivery (PD) protocol to negotiate power with your laptop.Compatible with laptops and devices that support USB‑C PD charging at ~65 W–90 W and can negotiate 20 V.�� Note: Not all Lenovo laptops support USB‑C charging — some older models use a proprietary rectangular “slim tip,” round pin, or “USB pin” charger instead. Always check your laptop’s charging specs or manual first.�� When It WorksA 90 W USB‑C charger (20 V 4.5 A) will work only if:Your Lenovo laptop’s USB‑C port supports Power Delivery (PD) charging.It supports 20 V input — most modern ThinkPad, IdeaPad, Yoga, and some Legion models do.�� If your laptop doesn’t support USB‑C charging (for example some older Legion gaming models), a USB‑C charger won’t power it even if the wattage and voltage look right
