I would think that if your thin clients IOS and version of Citrix support USB that it should work. The syncing is working on the server end via a db. JAK Rob Slayden rote: We are considering the possibility of deploying Blackberry PDAs to some of our field. These users would need to be able to sync periodically from a desktop pub app on a Wyse WBT. I realize that USB synchronization is not supported with the standard product (Citrix), and that COM port sync might be a viable option. I also took a peek at the EOL USB-IT product and am waiting on a callback to determine if it is supported on a thin client WBT or if it requires a fat client. I also realize that the B.E.S 4.0 update supports wireless sync of all PDA functions and not just Calendar and email. That being said, I am curious to know if anyone has deployed Blackberry PDAs successfully and is sync'ing over WBTs and Citrix over COM ports and/or USB using USB-IT or any other products. There seemed to be some indication in the archives that some were experiencing problems with COM port synchronization. I know that there was a timeout issue with client version 7.1 previously. Also, we may not be able to implement an upgrade to B.E.S 4.0 soon due to the necessity to tread carefully there because we have our entire executive staff and IT depending upon it. Any information would be greatly appreciated. Thanks, Rob 24 Hour Fitness, Inc.