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Green PCI expansion card with four serial ports via DB44 connector and metal bracket

SUNIX

SUNIX SER5056A+L 4-port RS-232 PCI expansion card

SKU CH-997T-EF56D MPN SER5056A+L

Adds four RS-232 serial ports via Universal PCI with SUN1999 controller and 128-byte FIFO

  • Product typePCI to Serial Port Card
  • DetailsSerial Communication -Interface; RS-232 -Controller: SUNIX S
  • Key featuresExpands 4 independent RS-232 serial port with communication
  • Product dimensionsPCB Dimension: 120 × 68 mm Bracket: Standard 121 mm
  • Adds four RS-232 serial ports for legacy device connectivity
  • SUN1999 controller provides 16C950 UART compatibility with 128 byte FIFO
  • Universal PCI bus supports 3.3V and 5V slots at 33MHz
  • Data rates from 50 bps to 115.2 Kbps with multiple flow control options
  • DB44 female connector with +/-2KV ESD protection per signal HBM

Four RS-232 ports on universal PCI

The SUNIX SER5056A+L is a universal PCI expansion card that adds four independent RS-232 serial ports to a desktop computer. It uses the SUN1999 controller, which is compatible with the 16C950 UART, and supports PCI 3.0, 2.3, 2.2 and 2.1 at 33 MHz on both 3.3 V and 5 V slots.

Suits legacy serial equipment.

This card suits users connecting industrial machinery, point-of-sale hardware or older modems that require DB-44 RS-232 signalling with full hardware flow control. It is not for systems that lack a conventional PCI slot or for applications that need USB, parallel or other interface types.

115.2 Kbps maximum baud rate

Each port operates from 50 bps up to 115.2 Kbps with 128-byte hardware FIFO and configurable data, stop and parity bits. The 115.2 Kbps ceiling determines whether the card can meet the throughput demands of a specific serial device.

How it compares

Measured against everything we stock in PCIe Expansion Cards, at today’s prices. Recalculated every night.

Price $44.99
Pricier than about 67% of the 891 comparable items (median $30.99).

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Specifications

Product
Brand nameSUNIX
Model nameSER5056A+L
Product typePCI to Serial Port Card
Size & build
Product dimensionsPCB Dimension: 120 × 68 mm
Bracket: Standard 121 mm
Shipping weight0.42 kg
Package size216 × 168 × 79 mm

Questions about this item

Will the 121 mm bracket and 120 x 68 mm PCB fit a standard PCI slot?

Yes, the 121 mm bracket matches a full-height PCI slot and the 120 x 68 mm PCB sits within standard card dimensions.

How do I connect four serial devices to the single DB44 female connector?

Use a DB44-to-four-DB9 breakout cable; plug it into the onboard DB44 female port and attach each device to a DB9 male end.

Does the SUN1999 controller need a fan or capacitor replacement over time?

No, the SUN1999 16C950-compatible UART has no moving parts and no user-serviceable capacitors.

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