Servicing stack updates (SSU) makes sure that you have a robust and reliable servicing stack so that your devices can receive and install Microsoft updates. This update makes quality improvements to the servicing stack, which is the component that installs Windows updates. Windows Server 2008 R2 for 圆4-based Systems Service Pack 1 (Server Core installation)
Windows Server 2008 R2 for 圆4-based Systems Service Pack 1 Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 Windows 7 for 圆4-based Systems Service Pack 1 Windows 7 for 32-bit Systems Service Pack 1