2-Port USB-to -Serial RS-422/485 Hub The ATEN USB-to-Serial RS-422/485 Hub provides an external plug-and-play RS-422 / RS-485 serial connection for computers, notebooks, laptops, and handheld computing devices that support the USB specification. It provides a quick, simple, and cost-effective solution and is ideal for various communication and automation applications. Features Easy way to add 2 RS-422/RS-485 serial ports Fully compliant with USB 1.1; USB 2.0 compatible Supports RS-422/RS-485 serial interface Each port can independently switch between RS-422 and RS-485 Supports automatic handshake mode Up to 115.2 Kbps data transfer rate for each serial port Dual data buffers for each upstream and downstream data transfer No IRQ, DMA, I/O address resources required Supports hot-swapping and plug-and-play Built-in 16KV ESD protection Supports both bus power and external power Works with cellular phones, PDAs, digital cameras, modems and ISDN terminal adapters OS support - Windows 2000/2003/XP/NT Package Content 1x USB-to-Serial Hub 1x USB Cable 1x Installation Disk 1x User Manual 1x Quick Start Guide Diagram Specification Function UC4852 UC4854 Device Connections 2 4 Connectors USB 1 x USB Type B Female (White) Serial 2 x DB-9 Male (Black) 4 x DB-9 Male (Black) Power 1 x DC Jack LDEs Port Status 2 (Green) 4 (Green) Power 1 (Orange) Data Transfer Rate 115.2 Kbps (max.) FIFO 16 byte Hardware FIFO USB Specification USB 1.1 Compliant; USB 2.0 Compatible RS-422 Signal TXD+/-, RxD+/-, RTS+/-, CTS+/-,GND RS-485 Signal Data+/-, GND Data Bit 5, 6, 7, 8 Stop Bit 1, 1.5, 2 Power Mode Bus Powered; use of Power Adapter is optional Power consumption 0.9W 1.0W Environment Operating Temp. 0-50˚C Storage Temp. -20-60˚C Humidity 0-80% RH, Non-condensing Physical Properties Housing Metal Weight 0.30 kg 0.32 kg Dimensions ( L x W x H ) 12.50 x 8.15 x 2.50 cm * The specification and pictures are subject to change without notice. * All trademarks and logos are the properties of their respective holders.

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