LinkX direct-attach copper cables offer very low-cost EDR and HDR links up to 5 meters and 2.5 meters for 25G-NRZ EDR and 50G PAM4 HDR, respectively. DACs offer near-zero latency and power consumption, making them ideal for in-rack switches to CPU, GPU, memory, and storage subsystems. Typically used in system bays that link ToR switches to ConnectX HCAs.