The assembly is larger then the original, this caused issues with the installation of the ducting components and the support brackets and screws, I was unable to install the 3 main mounting screws that hold the fan assembly or the 2 air ducts for cooling. It is not made for the Precision T5600 and should not be advertised as such.
The fan noise is about 50% less "good", seems to be working well, no cooling issues so far.