Plastic Gold Coated Plug, Reliable, Super Transmission Performance, Signal Stability Increased by 40%High Quality D-SUB Male Connector and Female Adapter DB9 Solderless Terminal RS232 Serial Port to 9pin Terminal PlateAll signal ports are clearly marked on both sides of the board for quick wiring. It can connect all kinds of serial devices. Such as computer and tax inspection machine, digital camera, PLC, PDA, MODEM, set-top box, barcode machine, industrial instrumentation and other communication equipment. It is suitable for pin connections required for the use of industrial serial communication control products. Size: 48x34x20mmMaterial: engineering plastic+metal Color: Black Package Contents:1*DB91 Female Solderless Connectors*DB9 Male Solderless ConnectorsOnly the above package content, other products are not included. Note: The light and different displays may cause the color of the item in the picture to be slightly different from the real thing. The allowed measurement error is +/- 1-3cm.