Download Precise Virtual Box Version i.e. VirtualBox 5.1.26 from below link

https://www.virtualbox.org/wiki/Download_Old_Builds_5_1 and click on Windows hosts  x86/AMD64

Alternatively, you can also use any latest Oracle Virtual box, which now supports “Host Network Manager”, please refer the blog post:

Use “Host Network Manager” in Oracle Virtual Box

Download the packages – OEL7.3Packages

For superior quality watch the video in 720p HD.