METASYS MS-NAE5520-1 --- SHIPPED WITH S/W VER. 2.2 --- RY10708 REV B --- battery says 5/23/18 , I do not know if it is good --- unit is used and have no way to test --- if unit proves out to be faulty and you contact me within 21 days of receiving it, i will provide return postage and upon receiving unit in the same shape as sent , refund all of your monies. Thank You