Compatible with multiple systems for Win8/10/ OS driver-free, compatible with a variety of computer systems Plug and play, support hot swap. Stable signal transmission,Built with professional chips, more stable performance and stronger compatibility. Multi-layer shielding, no signal distortion,Tinned copper wire core + aluminum foil + braided mesh multiple shielding to avoid abnormal printing or garbled characters caused by short circuit due to line length. Made of PVC environmentally friendly material, it is insulated and flame retardant, making it to use. Model Number:USB to RS232 Converter DB9 Serial Port Cable The product appearance and printed words depending on the batch, but this does not affect use. Colour:Dark Blue Material:PVC Size:1.2m Package Contents: 1 * 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.