Precision Tower 3630 running Windows 10 64bit Builtin COM1 Serial port works but has overruns on input, some of the characters received are lost (115K baud). Device Manager lists COM1 under C240 LPC controller Driver listed as version 10.0.16299.15 from Microsoft, dated 2006 System claims the driver is up to date Is there a more recent driver, or something to be enabled in BIOS to get COM1 to work properly?