Rating: 
Summary: Works great in Win ME and XP
Review: I was a bit concerned about how well this adapter would work after reading about some of the installation problems below ... but no problem ... it installed automatically in XP on my new Dell Dimension 2400 in seconds. Apparently the drivers have been updated for XP. The installation on my old Compaq laptop (Win ME) took a few clicks and a reboot (don't forget that) but was also quick and easy. It works great with my serial GPS. I like it.
Rating: 
Summary: Beware -- does not work with MAC OS X!!!
Review: It gets one star because amazon won't let you give something zero stars.
Basically, this is one of the first peripherals I've tried that does not work with a OS X Jaguar. (It works with Mac OS 8.x and 9.x, but not with Jaguar.) After searching the Iogear support site, they have a one sentence tech note "regretting any inconvenience" that they don't support it.
Rating:
Summary: Easy to use...
Review: It's easy to use, just install the drivers included in the CD, plug your adapter to your USB drive and you have your additional COM port ready to use!
Rating: 
Summary: Works on XP with Difficulty
Review: This device is actually manufactured by a company called Aten:... The initial drivers did have many problems, however; I was finally able to get the product to work on Windows XP. I down loaded the "make floppy" driver for XP from the manufactures website. Next, download the most recent windows 2000 driver and try and install it (yes, you have to download two separate drivers). The Windows 2000 driver will prompt you for a file it can not locate, point to your floppy drive (location of XP driver) and it will install the XP driver. If you check "Device Manager" you will first see a question mark prior to the install, after the install windows recognizes the device without a problem. You can even go into advaced properties and then change the Com Port number to a lower number then 5 (the default). It does seem strange that they don't have a simple fix for this, but at least I found a work around. Iogear has always filled a market nitch of specialized computing products, so I've come to not expect a lot of support, but all the products generally work and are of good bulid quality (they don't fall apart).
Rating:
Summary: Does not work under XP
Review: This would be a great product... If it worked. Out of the box this device does not support XP. The website has drivers, but they also do not work.
Rating:
Summary: Does Not Work With Windows XP
Review: Trust the other reviewers. This does not work with Windows XP. Even though on the outside of the box it states it will work with XP on the inside it says "We have developed a walkthrough for our customers wishing to use the USB/PDA adapter with Windows XP. Although we currently make no official guarantees of functionality, many people have had success when installing the Windows 2000 driver." They can't even say it will work. Many hours of attempting to get this to work for my Palm Vx, I was about to give up UNTIL I saw on Amazon an adapter that Reviwers said worked with Windows XP. I bought it and it does!! So, save your money from IOGEAR and purchase the CABLES TO GO USB to Serial Adapter. It is so much simpler to install and it works!!!
Rating:
Summary: Works great on FreeBSD
Review: Works out of the box on FreeBSD 4.7-STABLE, just plug it in and go. Highly recommended. Windows and MacOS drivers are old though.
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