DELL DR984 Bluetooth Receiver for Keyboard/Mouse drivers on Win7 64bit

I recently acquired a Latitude E6510 with Windows 7 Pro 64bit.  My Dell DR984 Bluetooth KB/MS receiver works on my Latitude E6400 with win 7 32bit works but fails on the new notebook. 

I have tried the Broadcomm updater, but it fails with a message that Dell must be contacted.  Where can I find drivers so that I can use the DR984 with my new notebook?

Thank You