Brand: Corsair, Model: CW-8960076, Product type: Retention kit, Compatibility: ELITE Capellix & ELITE LCD Series AIO Coolers, Cooling Socket Support: AMD sTRX4 Only, AMD Processors Supported: Ryzen Threadripper. This replacement retention kit comes with all hardware to allow you to install Elite Capellix coolers on AMD sTR4 and sTRX4 sockets used by AMD’s Threadripper CPUs. This retention kit is not backward compatible with older CORSAIR Platinum/PRO XT coolers.