1,Serial protection, 10KV surge protection, USB interface power supply, no external power adapter 2,Strong compatibility, support a variety of operating system platforms, which makes the adapter very universal 3,Supported operating system platforms are for Windows 7 or 8 or 10 or Linux or OS X 10 4,Compatible with most GPS and PDA devices, modems, printers, scanners, digital cameras, and office equipment 5,Suitable for modems, printers, scanners, digital cameras or other office equipment Item Type: USB to RS232 Converter Material: ABS Color: Blue Chip: PL2303 Dual-Chip Usb Type: USB2.0 Rs232 Output Power: -5.7 to and5.7VDC Rs-232 Data Signal: TxD,RxD,RTS,CTS,DSR,DTR,DCD,RI,GND Porture Rate: 300bps to 1Mbps Scope of Application: Compatible with Most GPS and PDA Devices (Garmin and Palm). Also Suitable for Modems, Printers, Scanners, Digital Cameras or Other Office Equipment Support System: For Windows 7 or 8 or   Windows 10 or  Linux or  OS X Operating System 10.X 1 x USB to RS232 Converter 1 x Drive Disc Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.