PowerShell prompts with >> because you are missing semicolons (;) after some of the properties.
Also, if you are on NPM 11.5 or later you don't need to specify most of those properties. Please check out this sample: OrionSDK/CRUD.AddNode.ps1 at master · solarwinds/OrionSDK · GitHub
Thanks for your reply Tdanner
Is there a simple way to auto add all nics and Windows volumes?