No. While generally Meraki is forgiving in non-official support this is pushing it too far. Pretty sure the dashboard can't handle splitting up the 40G interfaces into 4 10G interfaces. Here are the officially supported SFPs:
@Gleep52 it cannot work as you only have one port number for the QSFP+ ports. On other switches that support breakout cables the QSFP+ ports are numbered like 37 and 41 so that when you use a breakout cable, 38, 39 and 40 appear.
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