Ran across this and while it's for older servers, someone out there might want it for $7.72 shipped. 10 available open box condition:
PROVANTAGE: Intel AXX3U5UCMA Rack Cable Management-Arm for AXX3U5UPRAIL SEALED **OPEN BOX**
Product info from Intel that shows compatible chassis:
Rack Cable Management AXX3U5UCMA (For Use with Advanced Rail Kit AXX3U5UPRAIL for Intel® Server Chassis P4000 Family) Product Specifications
PROVANTAGE: Intel AXX3U5UCMA Rack Cable Management-Arm for AXX3U5UPRAIL SEALED **OPEN BOX**
Product info from Intel that shows compatible chassis:
Rack Cable Management AXX3U5UCMA (For Use with Advanced Rail Kit AXX3U5UPRAIL for Intel® Server Chassis P4000 Family) Product Specifications