A customer of mine had a Win2k server, 2 IT2000 w/Win98, 2 TM88 thermal printers and 1 TMU200B kit prt, running Aloha 5.2.34. After several hardware problems with the IT2000s, he decided to purchace 2 ELO 15A2 touchscreen terms and a DELL server, all running XP Pro. I came out and installed the same version (5.2.34) on the terms and the server, and transferred his databases. I used the exsisting cables for the 2 TM88 printers and manufactured one for the kit prt, using ELO's pinouts and aloha's specs. Everything was fine for about 30 min. All the printers worked perfectly. All at once, an error came up on the terms that the KP and the receipt prt on term 1 were down. After checking the cables and printers (which had no errors or problems), I rebooted the terminal. It worked again...for about 2 hours then the same problem. I have switched cables/printers/term #'s/ and checked all programming. The only configuration that works is if I completely remove the KP from the programming on the server and run with 1 receipt prt per term. Somehow, using COM2 on a term intermittantly locks up both com ports on that term...and yes, I have switched terms and the problem always follows the 2 prt configuration. I've been in the biz for several years, and recently got out so I'm not up on the new OS/Aloha/Terms compatibility. If anyone could help, it would be greatly appreciated. Thanks, Rick