It seems you're asking about a laptop charger with the specifications 19.5V, 3.34A, and 65W. This is a common power adapter used for many Dell laptops, including mid-range models like the XPS, Inspiron, and some Latitude series.

Important Features to Check for Compatibility:

1. Voltage: The charger should output 19.5V as per your requirement. Ensure your laptop supports this voltage.
2. Current: The charger is rated for 3.34A. As long as your laptop requires 3.34A or less, it will work fine. Higher current ratings are fine (they won't force your laptop to draw more than it needs), but the voltage must be exact.
3. Power: With 65W power, it is typically adequate for most ultra books and smaller laptops, but check if your laptop’s power requirements are within this range.
4. Pin Type: Dell laptops use different charging connectors, so ensure that the connector/pin type matches the one required by your laptop. Some of the newer models use a slim-tip.