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PCI-1824U is a general-purpose communication card, intended for PCI (3.3V or 5V) or PCI-X bus. The card provides four non-isolated RS-232 ports.

The PCI-1824U card is based on the Oxford Semiconductor controller OXmPCI954 that provides PCI bus interface, four efficient UARTs (16C950 standard) and parallel interface in one circuit.

All ports lead to four RJ45 connectors on the card and are not isolated, see PCI-1234U card if you need isolated ports.

Useful feature are LED indicators on the card mounting bracket (a pair for every port) providing a comfortable check of the line activity.

Delivery details

The product packet includes the PCI card only, all documentation and software are available in the Download section.


Type PCI-1884U
Number of ports 4
Ports type RS-232
Communication controller OXmPCI954 (Oxford Semiconductor)
Transfer rate up to 230.4kBd
Supported signals TXD, RXD, RTS, CTS, DTR, DSR, DCD
(the RI signal is connected with DSR or not connected at all)
Transceiver type HIN211E (Texas Instruments)
RS-232 flow control XON/XOFF, DTR/DSR, RTS/CTS
RS-232 ESD surge protection 15kV IEC 61000-4-2, air-gap
Isolation voltage no isolation
Bus type PCI, 3V3/5V, 32-bit, 33MHz
(64-bit PCI and PCI-X compatible)
I/O and MEM address,
Interrupt channels
assigned by PnP PCI BIOS
Dimensions approx. 90x125 mm
Weight approx. 80 g
Weight and dimensions
of product packaging
approx. 130 g
cardboard box approx. 180x130x40 mm