I use an old version of the Comtrol RocketPort USB to 4 serial ports and it works fine with all the programs that I have tried, including DXBase for rig control. The latest version can be found at http://www.comtrol.com/products/catalog.asp?product=rpusbshII a better price here http://www.epinions.com/Comtrol_ROCKETPORT_USB_SERIAL_HUB_II_982951_Serial_Adapter and even better for an open box product at the link below. http://www.macmall.com/macmall/shop/detail.asp?dpno=7054076&Redir=1 73 de Tony, KD4K My Radio web site http://home.adelphia.net/~tonycash/kd4k/radio.html My Weather Web Site http://home.adelphia.net/~tonycash Sawnee Mountain Repeater Web Site http://www.sawneemtn.org/ -----Original Message----- Subject: [Dxbase] USB to Serial adaptors GM, I am looking for input from users on known working USB to serial adaptors that are working with Dxbase. I have tried a Dynex with no luck and understand there are a few that will work and some that won't. I am looking for 2 -4 port. Tnx 73 Joe KI4TZ ______________________________________________________________ -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.408 / Virus Database: 268.13.11/492 - Release Date: 10/23/2006