Compliant with asynchronous Serial Interfaces. Over 1 Mbps Transfer Rate per port. Provides Remote Wake up and Power Management. Data Buffers for Upstream and Downstream on each port. Supports automatic handshaking mode. Works with cellular phones, PDA, Digital Cameras, Modems, GPS and. ISDN Terminal Adaptors. Connector Upstream Port USB type A Plug Male Total Length 6. Downstream Port 2x D Sub 9 Pin Connector. MaleHost Interface IO base address assigned by plug and play systems. Spykee Robot Software. Interrupt number assigned by plug and play systems. Introduction. Please note that most of these Brand Names are registered Trade Marks, Company Names or otherwise controlled and their inclusion in this index is. USB Double Serial Converter. Our Dual Serial USB Adaptor provides 2x 9 Way RS232 Serial Ports which can be used with Modems, Digital Cameras, GPS Devices, Scanners. International Journal of Engineering Research and Applications IJERA is an open access online peer reviewed international journal that publishes research. RS Components is the leading distributor of Electronic, Electrical Industrial components. Secure online ordering, same day dispatch free delivery.