SQL server connection

Hello all,
We are facing an issue with one of our project where the programmer left in the middle. I see the following code in the project
Server = “PC\SQLEXPRESS”;
Database = “";
Username = "
";
Password = "
**”;
ConnectionString = “DRIVER={SQL Server};SERVER=@SERVER;DATABASE=@DATABASE;UID=@USERNAME;PWD=@PASSWORD;”;

Does it mean the server is running on the local machine or it is remotely hosted?
Thanks