Enhance Connect-SPOService.md with additional examples

sharepoint/sharepoint-ps/Microsoft.Online.SharePoint.PowerShell/Connect-SPOService.md

@@ -109,6 +109,30 @@ Connect-SPOService -Url https://contoso-admin.sharepoint.com -UseSystemBrowser $
 ```
 Authenticates using the Microsoft Authentication Library (MSAL) and connects to the SharePoint Online Administration Center on successful authentication.
 
+### EXAMPLE 7
+
+```powershell
+$password = Read-Host -Prompt "Enter certificate password" -AsSecureString
+Connect-SPOService -Url https://contoso-admin.sharepoint.com -ClientId 00000000-0000-0000-0000-000000000000 -Tenant 11111111-1111-1111-1111-111111111111 -CertificatePath C:\Certs\ContosoAppAuth.pfx -CertificatePassword $password
+```
+Connect to the SharePoint Online service using an app identity and a certificate file path, with an optional password.
+
+### EXAMPLE 8
+
+```powershell
+Connect-SPOService -Url https://contoso-admin.sharepoint.com -ClientId 00000000-0000-0000-0000-000000000000 -Tenant 11111111-1111-1111-1111-111111111111 -CertificateThumbprint "3FAAAA1111AAAAAAAAAAA2222AAAAAAAAAAAAAAA"
+```
+Connect to the SharePoint Online service using an app identity and a certificate thumbprint.
+
+### EXAMPLE 9
+
+```powershell
+$thumbprint = "3F2A5C9D4E7B8A1234567890ABCDEF1234567890"
+$cert = Get-ChildItem Cert:\LocalMachine\My\$thumbprint
+Connect-SPOService -Url https://contoso-admin.sharepoint.com -ClientId 00000000-0000-0000-0000-000000000000 -Tenant 11111111-1111-1111-1111-111111111111 -Certificate $cert
+```
+Connect to the SharePoint Online service using an app identity and a certificate object.
+
 ## PARAMETERS
 
 ### -AuthenticationUrl