Plastic gold-plated plug, reliable contact, super transmission performance, signal stability increased by 40% High quality DB9 solderless RS232 D-SUB serial to 9pin port terminal male and female adapter connector breakout board All signal ports are clearly named and labeled on both sides of the board for quick wiring. It can connect all kinds of serial devices. Such as computer and tax control machine, digital camera, PLC, PDA, MODEM, set-top box, barcode machine, industrial instrumentation and other equipment for communication. Suitable for of pin connections required to use serial communications industrial control products. size:48x34x20mm Material:Engineering plastic + metal colour:black Package Contents: 1 * DB9 Female Solderless Connectors 1 * DB9 Male Solderless Connectors Only the above package content, other products are not included. Note: Light 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.