Using StarTech.com® PEX1S952LP 1 Port Low Profile Native PCI Express Serial Card, you can add an RS232 (DB9) serial port with data rates up to 460 Kbps to a computer through an available low profile PCIe slot.
Interfaces: 1 x 9-pin DB-9 male RS-232 serial external
features a half-height pci express mounting bracket that's designed specifically for low profile/small form factor computer cases
Includes an optional standard height bracket as well
Bank teller workstations in either full profile or low profile versions to control their serial devices such as cash drawers, card readers/card swipes, printers, keypads/pinpads, pen pads
Temperature rating: -10 - 80 deg C operating, 20 - 100 deg C storage
Humidity: 5 - 85% RH
Includes: 1 - 1 port serial card, 1 - standard profile bracket, 1 - driver CD, 1 - instruction manual