Direct Connect Mode
Beginning with release 3.1, Cisco UCS Manager supports an option to connect the C-Series Rack-Mount Server directly to the Fabric Interconnects. You do not need the Fabric Extenders. This option enables Cisco UCS Manager to manage the C-Series Rack-Mount Servers using a single cable for both management traffic and data traffic.
After connecting the server with the FI, when the server is discovered, make sure to update the C-Series software bundle available for Cisco UCS Manager, release 3.1 or later.
While using Cisco VIC 1385 and 1387 in a 10G connection you would a require a 40G to 10G QSFP convertor but you cannot use the 4x10 Breakout Small Form-Factor Pluggable (SFP) cables and 4x10 Active Optical (OAC) cables.
When you use direct connect mode, all Cisco UCS Managed adapters must be connected to the server ports on the Fabric Interconnects. Make sure you have server firmware as listed in the Requirements for Direct Connect Mode Integration with Cisco UCS Manager. If not, upgrade your server firmware before integrating the server with Cisco UCS Manager. See Upgrading the C-Series Server Firmware.
For the maximum number of virtual interfaces allowed on each adapter in the server that is directly connected to the Fabric Interconnect, see