?What you get?:1PCS DB37 Male solderless connector,1PCS cable clamp,2PCS screws,2PCS long bolts,4PCS Wire cover,2PCS 4#5+7 Serial port Nut ,. ?Intuitive?: 37pin all signal ports are clearly named and labeled on both sides of the board for quick wiring. ?Features?: 37 pin is plated with gold and has the characteristics of oxidation resistance, wear resistance and durability Effectively reduce the attenuation value,Maximum current: 2A. The outer cg is made of environmentally friendly PP engineering material, which is soft and durable. ?DIY DB37 cable? :Using 25pin male and female connectors, you can make DB25 cable or USB to RS232 / RS485 cable by yourself. ?No Soldering Required?: DB37 Male connector No need for soldering iron and cumbersome tools, easy wiring.Loosen the bolt clockwise and tighten the screw counterclockwise.