The InfiniBand QDR Link Layer Core by Polybus Systems Corp excels in delivering Quad Data Rate (QDR) data communication. It efficiently operates at 500 MHz on ASICs and 250 MHz on FPGAs, providing versatile 1X, 4X, and 8X connection modes. Its standout feature is the integrated PCS layer supporting sophisticated FPGA models like Altera Stratix and Xilinx Virtex and Kintex, enhancing performance in cutting-edge networking applications.