Communication effect:The gold-plated connector is made of insulating and environmentally friendly PVC material, with low resistance value, which reduces the wear of the connector and achieves a good communication effect. Adapter:There is an LED indicator light on the front to prompt the sending and receiving instructions. 7-core, faster transmission speed; DB15 communication interface can be connected to the computer, support hot swap. [details]PC-TTY programming cable conforming to specification 2464, 28 AWG (7 / 0.12 mm), consisting of seven 0.12 mm copper wires :This programming cable is suitable for connecting S5 series PLC and computer for serial port programming. The use of USB to RS232 conversion cable for transmission and communication is not supported. USB Type:Standard Colour:Blue Material:PVC Package Contents: 1 * Programming cable 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.