1. USB2.0 to RS232 Male DB9 Serial Cable with RS232 Female Converter,Connect USB Port on your Computer to your RS232 DP 9Pin Devices,USB Port is available with 1Mbbps date transfer rate.2. USB2.0 to RS232 Male DB9 Serial Cable with Additional RS232 Female Converter,much easy for your actual use.3. Simple installation ,plug and play,Uses latest prolific PL2303 Chipset,Supports for Windows 10/8.1/8/7/Vista/XP//2000 /for Linux 2.4 or above /and for Mac OS X 10.6 and above.4. Easy Connectivity,USB to RS232 adapter works with modems, ISDN Terminal Adapters, digital cameras, label writers, palm PCs, PDAs,cashier register,CNC,PLC controller,tax printer,POS, bar code scanner, label printer,and devices with DB9 SERIAL ports.Please note that not compatible with Cutting plotter,SCM.5. Drive Installed Needed: Please install the provided driver via enclosed CD to enable this adapter cable.Connector Type: RS232, Usb 2.0Cable Type:USBCompatible Devices:Scanner, PC, Modem, PrinterColour:blackMaterial:Plastic + MetalPackage Contents:1 x USB to RS232 Adapter1 x RS232 Female Adapter1 x CDOnly the above package content, other products are not included.Note: Light shooting 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.