: Copper cored gold-plated joints are used for durability, plugging resistance and good contact. It adopts all-copper environmental protection copper terminal, which has good transmission. No Soldering Required: Just use a small screwdriver to open up the terminal blocks, your stranded or solid-core wire, and re-tighten. Clearly Labeled Terminals: All the pins are clearly labeled on both sides of the board for quick wiring and reduce error. Widely Applications: 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. Note:Due to different factory batches, there may be slight differences in appearance, which does not affect use. Colour:Green Material:ABS Package Contents: 2 x DB37 Male Female Breakout Board 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.