Connect a RS-232 Serial device to the USB port on your computer or Android tablet/phone.Compatible with Android tablets/phones with USB Host Mode (OTG) support and OS version 3.2 and above.Connectors: USB-A male/DB9 male.Portable design is ideal for use with a PDA or digital camera.Does not require external power.Supports data transfer rates up to 230 kbps.Premium double-shielded cable with tinned copper braid and aluminum Mylar foil shield that eliminates cross-talk and reduces EMI/RFI interference.Compatible with Windows, Mac and Linux computers, and Android tablets/smartphones.