Tesla t4 on hpe gen 10+ and windows server 2019, GPU doesn´t appear in Task Manager

Hello, We have a ProLiant DL380 Gen10 Plus with a NVIDIA Tesla T4.
In the iLO, Nvidia is displaying in green with status “Enabled” and in Windows in the Device Manager Control Panel is listed and well installed, but I can´t see the GPU in the Task Manager.
I don´t be sure if the GPU is working or not.
Why doesn´t appear GPU in the task manager? How can i know if GPU is working?