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Key Features
- One serial port
- USB2 compatible
- Appears as standard COM port
- Speeds up to 921.6 kbps
- 3000V Optical Isolation, 15KV ESD immunity
- Auto detect between RS-485 and RS-422
- Full-duplex or half-duplex modes
- Bus powered, no external power required
- 1024-byte transmit and receive FIFOs, 15kV ESD immunity
- DB-9 connector
- Win 2000/XP/VISTA support
- One year warranty
The new SSU2-400I from Quatech is a high speed USB 2.0 serial adapter which gives your laptop or workstation the ability to communicate between a USB (Universal Serial Bus) port and one RS-232, RS-422 or RS-485 serial peripheral. It adds the COM port via its USB connection and is compatible with new and legacy serial devices. Any application which works with an onboard serial port should work with this equipment. The SSU2-400I also has optical isolation (up to 3000V). The USB 2.0 Serial Adapters are the ideal solution for a variety of industries and applications including banking, retail and industrial automation where PCs have a significantly shorter lifecycle than the peripherals that use them. Support is provided for Windows 2000/XP/VISTA & Linux.
USB Serial Adapters vs. USB Serial Cables
Not all USB to serial converters are not the same. There are a number of inexpensive cables on the market that perform USB to serial conversion. While these may seem like an economical choice, they are often poor choices for all but the simplest of applications. Many customers who purchase Quatech USB to serial adapters do so after unsuccessful attempts to use these serial converter cables. The reason these cables fail are varied but the most common is that they lack the advanced functionality built into the Quatech adapters.
For example. most adapter cables have very small data buffers and no IRQ support. Quatech USB to serial adapters use 16550 UARTs with 1024-byte FIFOs for each port. This means that applications at very high data rates are easily handled in heavy multitasking environments. In addition, Quatech provides sophisticated drivers for its adapters that enable extensive system configuration options from setting data rates and controlling clocking to setting parity bits and flow control. With these options available, even the most sophisticated application software can address serial ports enabled by Quatech adapters exactly as they would a standard COM port.
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