INSERT into two separate tables using ADO.Net

I am creating a tracking application to keep track of some server and their build info. I want the user to fill out one single form that then performs a INSERT into two separate tables. Here is my code, but it only populates the "Server" table and not the "System_Build_Information" table. I have tried also changing the Bindings and even leaving them out all together. This code by the way is from my Server controller

[HttpPost]
    [ValidateAntiForgeryToken]
    public ActionResult Create([Bind(Include = "Server_Name,Server_Role,Server_OS")] Server server, 
        [Bind(Include = "Model")] System_Build_Information sys)
    {
        if (ModelState.IsValid)
        {
            db.Servers.Add(server);
            db.System_Build_Information.Add(sys);
            db.SaveChanges();
            return RedirectToAction("Index");
        }

        ViewBag.Server_Role = new SelectList(db.Server_Roles, "Id", "Server_Role", server.Server_Role);
        ViewBag.Server_OS = new SelectList(db.Operating_System, "Id", "Operating System", server.Server_OS);
        string[] environments = new string[] { "Virtual", "Physical" };
        ViewBag.Environments = new SelectList(environments);
        return View(server);
    }