If you are looking for a "piece" of information or a specific file from within that archive, I can't access or extract the contents of .rar files directly. To help you out, could you tell me:
Knowing the or the associated hardware/software will help me track down the details you're looking for! sc22890-SD2N5RODUpd81320.rar
(e.g., a setup guide, a serial number, or a code snippet) If you are looking for a "piece" of
(e.g., a printer driver, a game mod, or server logs) a setup guide