Rating: 
Summary: Easy to use
Review: I've used this to connect a PDA to a winXP laptop, and it works great. Activesync and internet sharing over bluetooth works fine, although the set-up is a little tedious. Make sure to install the latest drivers, and to follow the steps presented by the bluetooth wizard on the PDA exactly. And remember that if you want to use this to give the PDA internet connectivity, you have to share the outgoing connection (local area connection or whatever).
Rating: 
Summary: Works great!
Review: It takes a bit of time & patience to install, but works great on Windows XP. All bluetooth USB devices seem to use Widcomm bluetooth software (it creates a virtual COM port). Buy which ever is the cheapest and currently its this one here on Amazon. With correct SW on your PC you can control Winamp, Powerpoint, move mouse pointer etc from your phone!Look around on forums for help with installation issues. One a setup is done Bluetooth rocks!
Rating:
Summary: MAC Compatable Bluetooth Adapter!!
Review: Plug and play for my Mac running OS 10.2.4.!! Just connect it to the extra keyboard usb slot and run the bluetooth setup program in the Application/Utilities folder. I had no problem pairing it up with my two Sony Ericsson T68i's. I used Apple's iSYNC to synch my iCAL and Address Book with the phones. One tip I'll give is to keep the Mac's calendar event times correct with the T68i's is by verifying that the correct GMT zone in your phone matches the selection in your computer otherwise, you will get incorrect times in the phone (dependant on the error in the GMT setting in your phone...you can verify your phone setting by selecting Settings... Time & Date... Advanced... Time Zone).
Rating:
Summary: Great device!
Review: Small enough to fit in your pocket. Easy to set up. I use the adapter to sync my HP 1940 to my laptop or desktop, or to transfer pictures, ringtones, and contacts to my Siemens S56 Cingular cell phone. Best form and function for the price!
Rating: 
Summary: Enormous
Review: Technically, the device seems to be working fine with Mac OS X 10.3.1 (7C107). However it's far larger than other similar devices. Granted, the device is the size of about three postage stamps side by side. Not completely unwieldy, but not as compact as it should be.
Rating: 
Summary: Does not work!
Review: The device has issues. Windows drivers are old from 2002.
It is not waking up after hibernation.
I had issues when I use with Bluetooth headset.
Not recommended.
Rating:
Summary: Guessing game for COM4
Review: The device works fine after I disabled all comports and enabled COM4. Took a while to figuere this one out since the manual and instruction is pretty bad (maybe it should have said in the phone manual). I use the bluetooth adapter with T68i and a PC.
Rating:
Summary: Absolutely does not work with Nokia 3650
Review: This product just does not work with Nokia 3650. I had to return it back after two days. The customer service does not even have a toll free number, so you got to call long distance. The e-mail support I got was of no use. Looked like they did not even read the error message I was getting. This product uses 1.2.2.18, a totally outdated version of Widcomm driver. There are no new drivers available. After returning it, I bought Belkin F8T001 from amazon.com and it worked just great. I never had problem connecting Nokia 3650. I think the extra $10 or so I spent for Belkin are worth it.
Rating:
Summary: Worked well and includes Widcomm software
Review: Well integrated package worked right out of the box with no funny issues. This is how technology should be.
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