EPCIE4XRDCA01A is External PCI Express x4 Active (Redriver with Linear Equalization) Cable Adapter Card, it requires no additional software or drivers to operate. Designed to overcome the limited PCIe connectivity of most desktop computers, the EPCIE4XRDCA01A can be quickly and easily set up for external expansion. EPCIE4XRDCA01A provides programmable Linear Equalization, Output Swing and Flat Gain by pin strapping easily. The programmable settings can be applied easily via DIP Switch. EPCIE4XRDCA01A offers fully Linear Transfer function to fully comply with all PCIe 3 Link Training signals. The integrated equalization circuitry provides flexibility with signal integrity of the PCI Express signal before the Redriver, whereas the integrated Flat Gain circuitry provides flexibility with signal integrity of the PCI Express signal after the Redriver.