The Dell XF3T9 AC adapter powers and charges Dell notebooks. Its 65 W output at 19.5 V and 3-pin Type-C connector identify this model and help check whether it matches the notebook setup.
The XF3T9 is listed as a replacement for a damaged or lost adapter, or as a spare to keep at home or in the office. It can also be taken along for travel, providing a power source for a Dell notebook when needed. The stated connector type and electrical output describe the confirmed specifications for this particular adapter.