The 2299805-1 is a steel backplate assembly from TE Connectivity, designed specifically for LGA 3647 sockets. Its body is steel with a nickel finish, giving it the silver appearance listed in the specs. This is a structural accessory — it provides the mechanical clamping and flatness required to hold the LGA 3647 socket against the PCB under the heatsink load. Without it, the socket pins may not contact the processor pads reliably.
Production status and sourcing posture
RoHS compliant, so it meets the current EU material restriction directive for electronic equipment.
Compatibility check – LGA 3647 sockets
The 2299805-1 is listed for use with LGA 3647 sockets. That covers the Intel Xeon Scalable processor socket family (Skylake-SP, Cascade Lake-SP, etc.). It is not a universal backplate — it matches the hole pattern and standoff height of the LGA 3647 socket footprint.