The National Instruments 191649C-04L, also known as the SHC68-68-EPM cable, is a high-performance shielded cable designed for connecting NI X Series and M Series multifunction data acquisition (DAQ) devices to accessories. This 4-meter cable features two 68-pin VHDCI male connectors and is engineered to ensure signal integrity in demanding measurement applications. Its robust construction includes individually shielded twisted pairs for analog signals, which minimizes crosstalk and protects signals from environmental noise. This makes it an ideal choice for high-accuracy data acquisition systems requiring reliable, low-noise connections between DAQ hardware and terminal blocks or other breakout accessories.