AspNetCore.Identity.Neo4j Nuget library is using official Neo4j.Driver to connect to Neo4j graph database.
public void ConfigureServices(IServiceCollection services)
{
services.AddSingleton(s => GraphDatabase.Driver(Configuration.GetConnectionString("DefaultConnection"), AuthTokens.Basic("neo4j", "neo4j")));
services.AddScoped(s => s.GetService<IDriver>().Session());
services.AddIdentity<ApplicationUser, Neo4jIdentityRole>()
.AddNeo4jDataStores()
.AddDefaultTokenProviders();
...
}