Update exchange-online-powershell-v2.md

Adding example for PropertySets All

Author: navgupta1208

exchange/docs-conceptual/exchange-online/exchange-online-powershell-v2/exchange-online-powershell-v2.md

@@ -213,3 +213,14 @@ Get-EXOMailbox -ResultSize 10
 In contrast, the same **Get-Mailbox** cmdlet would return at least 230 properties for the same ten mailboxes.
 
 For details about the property sets that are available in EXO V2 module cmdlets, see [Property sets in Exchange Online PowerShell V2 cmdlets](cmdlet-property-sets.md) or the individual EXO V2 module cmdlet reference topics.
+
+EXO Cmdlets also provide a way to retreive all properties for a cmdlet. Use ProperySets parameter with "All" value to get the same. 
+Below example returns all the properties in the "All" property Set for the 10 mailboxes - 
+
+```PowerShell
+Get-EXOMailbox -ResultSize 10 -PropertySets All
+```
+
+**Note**: Using PropertySets parameter with "All" is highly discouraged as it slows down the cmdlet and reduces the reliability as well. Always use PropertySets and Properties parameter to retreive only the requires attributes.
+
+