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
No need for an external power adapter?draws power directly from your computer via the USB connection
DB9 serial ports support data transfer rates up to 460 Kbps?four times the speed of a standard built-in serial port
This review is from: Keyspan by Tripp Lite USA-49WG 4 port USB DB9 AdapterI'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....
This review is from: Keyspan by Tripp Lite USA-49WG 4 port USB DB9 AdapterThis is the absolute best USB to Serial Comm port adapter.
You'll never need to unplug and replug it in.
You'll never need to go into Device Manager and change the COM port number.
It is a good performer and works well.
Tripplite/Keyspan has 64 bit driver for windows XP/Visa/W7.
I have used this device on 32 bit Vista and on 64 bit Vista....
This review is from: Keyspan by Tripp Lite USA-49WG 4 port USB DB9 AdapterI have used Keyspans individual port adapters for several years. They work flawlessly and are quite fast. I do a lot of work on high speed serial devices running without flow control. The devices keep up.
I found that I often had 4 single Keyspans cluttering my desk. I wanted this device. When I finally found it, it was a no-brainer. It works flawlessly. (I had hoped it would be less expensive than 4 singles - and it is - just a little.)
A nice little benefit is I use their static mapping tool to make the ports appear as COM11 thru COM14, eliminating past confusion about which port goes with which device.
Serial is officially a legacy device. New PCs don't have serial ports. But, if you have a lot of serial devices to manage, this is a great way to simplify cabling and management hassles....
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