Please … when you post code or sample data or console output please format it as code using the preformatted text button ( </> ). Simply place your cursor on an empty line, click the button and paste your code.
Thanks in advance
And now you gave up or what? 
When you import your CSV file with …
$CSVsource =Import-Csv -Path 'C:\Temp\CSVData.csv'
What happens when you simply output …
$CSVsource.Devices
?
Now you should read
and
Please read it completely including the examples! … you’re almost there!! 