Set the USB to 232 serial port used by the console port of router switch (passed the test by HyperTerminal, SecureCRT and other configuration software) It can solve the problem of notebook and desktop without 9-pin 232 serial port. It is mainly used to configure and use the console port of router, switch and other industrial control equipment. (this machine can be used, machines can't be used) It can also be used in reading equipment, telephone, mobile phone, digital camera, modem, ISDN and other terminal adapter communication. It is characterized by good compatibility (other low- on the market have incompatibility problems among various devices, so it is difficult or even impossible to use after buying back. It takes time and energy and costs more money. You will know once you have experienced it), Supports Windows 98, windows me, Windows 2000, Windows XP, MacOS 8.6 or higher. CD with drive It supports usb1.0 / 1.1 specification and is compatible with USB2.0 size: 0.6m Material:plastic colour:Blue Contents: 1 x Data Cable Only the above content, other are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.