You are essentially correct. Certain models of 3650 include 2x10gig fixed uplink ports (WS-C3650-24TD, WS-C3650-48TD, WS-C3650-24PD, WS-C3650-24PDM, WS-C3650-48PD, WS-C3650-48FD) which will require a Small Form-Factor Pluggable (SFP) to make connections from these ports.
http://www.cisco.com/c/en/us/products/collateral/switches/catalyst-3650-series-switches/datasheet-c78-729449.html