Dell Wyse 3040 ThinLinux TC - SSL conversion needed?

Hi All, Do I need to convert *.pfx to *.pem file while uploading SSL from Windows Server 2012 R2 (WMS Server) to "Thin Client Group" created within this server in the WMS Console. Or, I can upload as is without converting the SSLs? I have Dell Wyse 3040 ThinLinux Thin Client. Your help will be highly appreciated. Thank You, Rupesh Bhattarai ruppesh. Ph: