The BSP450 is an HDMI 19 female to HDMI 19 female straight adapter. This adapter can be used for connecting two HDMI cables to lengthen the video signal.
The connectors that are fitted with gold plated contacts have the advantage of preventing oxidation and maintain performance after years of use. Another great property of gold is that it is an excellent electrical conductor. For comparison, if pure copper has a relative conductivity of 100 then gold is only 31% lower than copper, while nickel is 76% lower than copper.