Colour:As Shown Material:PC+metal Package Contents: 1 x Expansion Card Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. The voltage across both ends is clamped at a predetermined value to protect subsequent circuit components from damage due to transient high voltage surges. Compatible with -422, -485 standard, can convert single-ended PCI-E signal to -422/-485 signal, with fast transient voltage suppression protector, this protector is designed to protect - 422/-485 interface, using transient voltage suppressor, when both ends of the tube are subjected to an instantaneous high-energy shock, it can reduce the impedance at both ends of the tube at a higher speed, absorb a large current, and thereby reduce its voltage. Industrial grade with transient voltage suppression protector This protector can effectively suppress ESD, provide 600W surge protection power per line, as well as surge voltage and transient overvoltage generated on due to various reasons, and the small -electrode capacitance ensures that -422 /-485 connection high-speed transmission.