Keyspan by Tripp Lite USA-49WG 4 port USB DB9 Adapter

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Price: $103.24 $96.81   

Product Feature

• Connector 1 4x DB9 Serial
• Plug & Play: Appear as standard COM ports
• Bus Powered: No external power adapter required
• Serial Adapter allows up to four serial devices to be connected to a single USB computer
• Plug-and-play convenience?DB9 serial ports are seen as COM ports by your computer, and are available for use by any program that accesses COM ports
• DB9 serial ports support data transfer rates up to 460 Kbps?four times the speed of a standard built-in serial port
• No need for an external power adapter?draws power directly from your computer via the USB connection

Product Description

The USB 4-Port Serial Adapter from Keyspan is an adapter box that allows you to connect up to four serial devices to a single USB port. The adapter is ideal for industries that still utilize legacy serial devices, as it allows them to be used with modern computer hardware. It is compatible with both PC and Mac operating systems.

Keyspan by Tripp Lite USA-49WG 4 port USB DB9 Adapter Review

I've been using this USB serial interface for a couple of years now. I've used it under Windows XP, Fedora and Ubuntu Linux. The Windows XP drivers are available on Keyspan's website. Fedora and Ubuntu (except version 7.10) include the drivers in the standard distribution.

The serial interfaces are solid, providing good RS-232 drive levels. The interfaces can also handle decent bit rates. I've used it up to 115200 BPS. It's also very convenient the way it is packaged. Especially in embedded systems programming, it's nice to have four serial ports right on your desk top with just the one USB cable running to the computer.

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