On Mar 9, 2007, at 11:26, James Pearson wrote: > Never used these cards, but the standard CentOS4 kernel has the > following config settings: > > CONFIG_SERIAL_8250_NR_UARTS=4 > # CONFIG_SERIAL_8250_MANY_PORTS is not set > > This might be your problem ... Hmm, this could definitely be it. I'll look into it further and report back. I'd rather not recompile the kernel, but if that is a way to get it to work, I'll certainly do it. Maybe the CentOS Plus kernel already has support for this enabled. I will check on that as well later today. Alfred