Panasonic Toughbooks have serial ports and other cool features, like hard drive heaters and daylight-viewable screens.
Not exactly cheap, but they exist.
From: ap-gto@... [mailto:ap-gto@...]
Sent: Wednesday, July 30, 2014 7:42 AM
Subject: Re: [ap-gto] rs232
---In ap-gto@..., wrote :
Sorry Jimmy, but I count 9 pins. bob