Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!usc!zaphod.mps.ohio-state.edu!rpi!crdgw1!uunet!sbi!zeus!cf_su10!cf_su14!nee From: nee@cf_su14.Salomon.Com (Robert Nee) Newsgroups: comp.dcom.modems Subject: Questions on High speed UARTS Message-ID: <131@cf_su20.cf_su10.Sbi.COM> Date: 19 Nov 90 21:34:14 GMT Sender: news@cf_su10.Sbi.COM Organization: Salomon Brothers, NY Lines: 22 I have a couple of questions for all the netlanders out there with high speed modems. Thanks in advance. 1 I read in PC Magazine that in order to use a high speed modem at peak efficiency you must have the 16550 UART chip installed in your computer. (not an 8250 or 16450) Fine, but when I looked in my computer the only chip I could find that was even close was a 16452. So my first question is "have I identified my UART?" 2 This 16452 chip is in a socket but it is not of the DIP variety. I don't know what to call it except that it is is a square socket like the ones 80387sx fit into. Do they make 16550s that fit into these square sockets. 3 If the answers to these questions we're yes. Where would you (the experienced high-speed communicator) purchase a replacement high-speed UART. Robert Nee P.S. the computer is a DELL 310 if that helps anyone...