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Green Mini PCIe card with four DB9 serial ports

UOTEK

UOTEK UT-7784B Mini PCIe RS-232 4-port serial card

SKU CH-7RM3-CS94H

Adds four RS-232 serial ports via Mini PCI Express with 921.6 kbps throughput and industrial -40 to 85 °C operation

  • Connectors4 * 1.25T-9AB Sockets
  • InterfacePCI-Express
  • Temperature-40~85°C
  • Connect four serial devices via four 1.25T-9AB sockets
  • Maintain data integrity with RTS/CTS and XON/XOFF flow control
  • Operate reliably from -40 to 85 degrees Celsius
  • Achieve transmission rates from 300 bps to 921.6 kbps
  • Support legacy and modern OS including Windows 2000 through 7 and Linux 2.4.x/2.6.x

Industrial serial expansion

The UOTEK UT-7784B adds four RS-232 ports to a system through a Mini PCI Express slot. It targets integrators building POS, ATM or industrial automation equipment that must talk to legacy serial peripherals such as modems, printers or scanners. The card operates from -40 to 85 °C, suiting harsh environments.

Capacity and headroom

Each port delivers 300 bps to 921.6 kbps with selectable data, stop and parity bits plus RTS/CTS and XON/XOFF flow control. Four independent channels handle concurrent sessions, but the single-lane Mini PCI Express link and 921.6 kbps ceiling limit aggregate throughput for high-speed multi-drop networks.

Mini PCI Express constraints

The x1 Gen 1 interface caps sustained bandwidth, so the card cannot saturate all four ports at maximum rate simultaneously. Legacy OS support ends at Windows 7 and Linux 2.6.x; modern kernels or Windows 10 and newer are not covered by the supplied driver matrix.

Puntos fuertes

  • Connect four serial devices via four 1.25T-9AB sockets
  • Maintain data integrity with RTS/CTS and XON/XOFF flow control
  • Operate reliably from -40 to 85 degrees Celsius
  • Achieve transmission rates from 300 bps to 921.6 kbps
  • Support legacy and modern OS including Windows 2000 through 7 and Linux 2.4.x/2.6.x

Especificaciones

BrandUOTEK
ModelUT-7784B
Connectors4 * 1.25T-9AB Sockets
InterfacePCI-Express
Temperature-40~85°C

Preguntas sobre este artículo

Will the 1.25T-9AB sockets on this UT-7784B card fit the DB9 cables from my existing POS terminals?

The card uses four 1.25T-9AB sockets; you will need cables or adapters that match that specific connector type to attach standard DB9 devices.

How can I verify each of the four RS-232 ports is communicating at the full 921.6 kbps after installation?

Use a terminal program or loopback plug to open each port at 921.6 kbps with 8 data bits, 1 stop bit, no parity and RTS/CTS flow control; successful data echo confirms the port is running at the rated speed.

Does the box include the 1.25T-9AB to DB9 cables, or must I order them separately?

Only the UT-7784B card itself is supplied; the four 1.25T-9AB to DB9 cables or adapter leads required for your serial devices are not included and must be purchased separately.

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