No, i can mix. Because as i tested, port goes up if 1G to MS225 and 10G to MS410 . At the first time, i want to use 10G on both switch, because i installed MS225 in another building. But after boot up for a long time, i didn't see port on MS410-16 goes up So i try use another topo, use another module ( i have 10 module 10G and 8 module 1G) And I realized that i can just insert 1G into MS225 .
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