Which is the lowest Gateway version manageable by Smart Center R77? 05/30/2017 – by Mod_GuideK 0 Which is the lowest Gateway version manageable by Smart Center R77? A. R65 B. S71 C. R55 D. R60A SHOW ANSWERSCorrect Answer: A Explanation/Reference: Download Printable PDF. VALID exam to help you PASS.