AC Adapter, 90W, 19.5V, 3

The Dell YY20N is a 90 W AC adapter for powering a laptop with a compatible barrel-style input. Its 19.5 V DC, 4.62 A output identifies the power specification, while the exact part number YY20N helps distinguish this configuration when choosing a replacement.

The adapter has a barrel connector with a 5 mm center tip. Its listed dimensions are 52 × 32 × 128 mm, describing the body size for planning a laptop power setup. Check that the laptop accepts this connector and electrical specification before use.

This unit supplies the stated DC output to a compatible laptop during operation. The connector type, output values and dimensions describe the YY20N configuration; they do not establish compatibility with laptops that require another tip or rating.