That's why laptops with a true RS232 serial port are at a premium for certain applications.<BR><BR>There are *some* USB-Serial bridges that are better than others.

I have a T400 and I have both a serial and a parallel express card adapter. There is really no reason to go to a 5+ generation old laptop just to talk over a really simple, slow interface.

“The converter lets you connect devices like barcode scanners, printers or RS232 controllers directly to an IO-Link terminal,” said the firm, claiming: “The expensive alternative using additional ...