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Green PCI card with single DR44 female connector bracket

UOTEK

UOTEK UT-754 PCI 4-port RS-232 serial card

SKU CH-AZ0B-P4QVJ

Adds four RS-232 serial ports via a single PCI slot with a DR44 connector, supporting 300 to 921.6K bps and industrial temperatures from -40 to 85°C

  • Connectors1 DR44 female
  • InterfacePCI
  • Temperature-40~85°C
  • Adds four RS-232 ports via a single PCI slot
  • 32-bit universal PCI bus fits 3.3 V and 5 V systems
  • 6 Kbps per port with RTS/CTS and XON/XOFF flow control
  • Industrial -40 °C to 85 °C operating range
  • Wide OS support from DOS and Linux 2.4/2.6 to Windows 10 64-bit

Four RS-232 ports on one PCI card

The UT-754 adds four serial ports through a single 32-bit universal PCI slot, using a DR44 female connector that breaks out to four RS-232 interfaces. It suits industrial automation, POS and ATM systems that still rely on legacy serial equipment such as modems, printers or scanners.

DR44 breakout replaces four separate brackets

One DR44 female connector carries all signals for the four ports, so only one expansion bracket is needed instead of four. The card supports RTS/CTS and XON/XOFF flow control, and each port handles 5, 6, 7 or 8 data bits with 1, 1.5 or 2 stop bits and none, even or odd parity.

Industrial temperature range and broad OS support

The board operates from -40 to 85 °C and works on both 3.3 V and 5 V PCI buses, allowing installation in standard PCs or servers. Drivers cover Windows 98 through Windows 10 32/64-bit, plus DOS and Linux 2.4/2.6 kernels. Buyers who need more than four serial ports or a PCIe interface will need a different adapter.

Highlights

  • Adds four RS-232 ports via a single PCI slot
  • 32-bit universal PCI bus fits 3.3 V and 5 V systems
  • 6 Kbps per port with RTS/CTS and XON/XOFF flow control
  • Industrial -40 °C to 85 °C operating range
  • Wide OS support from DOS and Linux 2.4/2.6 to Windows 10 64-bit

Specifications

BrandUOTEK
ModelUT-754
Connectors1 DR44 female
InterfacePCI
Temperature-40~85°C

Questions about this item

What maintenance does the DR44 cable assembly need after long use in an industrial cabinet?

The card itself has no moving parts or fan, so no scheduled maintenance is required; only the external DR44-to-DB9 cable set may need inspection for connector wear.

What limits sustained throughput on the UT-754 when all four ports run at 921.6 K bps continuously?

The 32 bit Universal PCI bus and shared interrupt budget set the practical ceiling before any port drops characters.

How much extra heat and noise does the card add inside a chassis that runs all day?

The board is passively cooled with no fan, draws only PCI slot power at 3.3 V or 5 V, and operates silently across the -40 to 85 °C range.

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