Zmods are SYZYGY-compliant expansion modules. SYZYGY is a high-speed I/O expansion standard for FPGA boards intended to fit between the Pmod standard and FMC. The SYZYGY standard offers a much higher speed/bandwidth digital interface than Pmod but at a much smaller and lower-cost form-factor than FMC, enabling the user to configure an FPGA development board with the right I/O for their application. When coupled to a base board using SYZYGY expansion (like the Eclypse or Genesys ZU), the combination will serve as a powerful prototyping platform for instrumentation, high-speed control and SDR products.