#method 0, with split operator
$Elements="22_ABCD" -split "_"
$Elements[0]
$Elements[1]
#method 1, with split member
$Elements="22_ABCD".Split('_')
$Elements[0]
$Elements[1]
#method 2, with split member and direct affectation
$Element1, $Element2="22_ABCD".Split('_')
$Element1
$Element2
#method 3, with ConvertFrom-String
$Elements="22_ABCD" | ConvertFrom-String -Delimiter "_" -PropertyNames "Element1", "Element2"
$Elements.Element1
$Elements.Element2
#method 4, with ConvertFrom-Csv
$Elements="22_ABCD" | ConvertFrom-Csv -Delimiter "_" -Header "Element1", "Element2"
$Elements.Element1
$Elements.Element2
#method 5, with regex
$Elements=[regex]::split("22_ABCD", '_')
$Elements[0]
$Elements[1]