---

$dirs = @(
    "C:\Siemens\NX\NXBIN",
    "C:\Siemens\NX\STEP214UG"
)

foreach ($dir in $dirs) {
    "`n=== $dir ==="
    Get-ChildItem $dir -File |
        Where-Object {
            $_.Name -match 'step214|libap214|libpart|libpom|libufun'
        } |
        Select-Object Name, Length, LastWriteTime
}