Hi Tony,
This message is expected as the B200M4 requires a minimum firmware of 2.2(3a) see below. To resolve this issue you need to upgrade the UCS infrastructure firmware to at least version 2.2(3a)
Table 4 Internal Dependencies
http://www.cisco.com/c/en/us/td/docs/unified_computing/ucs/release/notes/ucs_2_2_rn.html#pgfId-226104
Let me know if this helps