[[TracNav(HardwareUsersGuides/CM-MMCX/TOC)]] = CM-MMCX User Guide: Clock Module I/O = The CM-MMCX clock module connects to the [wiki:HardwareUsersGuides/WARPv3/Clocking#ClockModuleHeader clock module header] on a WARP v3 board. The clock module interface provides connections for power, ground, clock I/O and FPGA I/O. The CM-MMCX module connections two FPGA I/O to a SIP switch (see the [wiki:../Config configuration page] for details). The remaining FPGA I/O are unconnected on the CM-MMCX board. The CM-MMCX module does not connect to the clock module header power pins.