2 Port PCI RS422/485 Serial Adapter Card

  • RS Stock No. 186-4036
  • Mfr. Part No. PCI2S4851050
  • Manufacturer Startech
Technical data sheets
Legislation and Compliance
RoHS Certificate of Compliance
COO (Country of Origin): TW
Product Details

PCI2S4851050 PCI Serial Adapter Card

The PCI2S4851050 2-Port PCI Serial Adapter Card (RS422/RS485) with 161050 UART adds two DB9 RS422/RS485 serial ports, using a single PCI expansion slot.

The PCI serial card offers a high performance 16C1050 UART and supports both 2-wire and 4-wire RS485 modes. The card delivers an efficient single-chip design and a large 256-byte transit/receive FIFO buffer that work together to provide high-speed serial communication while reducing the overall load on the system CPU.

With the included standard and low profile/half-height brackets, this PCI serial expansion card suits a broad range of system form factors, and is a perfect addition for connecting RS422/485 serial devices to a host computer. For added versatility, the RS422/RS485 adapter is able to accommodate 3.3 or 5V PCI/PCI-X slots.

Backed by a StarTech.com lifetime warranty and free lifetime technical support.

Features & Benefits

• Supports maximum data transmission rate of 128Kbps
• 16C1050 UART with 256-byte Deep FIFO
• Supports 2-wire and 4-wire RS485 modes
• Jumper pins for RS422/485 toggling
• Supports Hardware and Software flow control
• Supports PCI Power Management 1.1
• Compliant with PCI Local Bus Specification 2.3
• Much larger FIFO buffer than standard serial cards (256 byte vs. 32 or 64 byte) minimizes data loss and optimizes host efficiency
• A simple jumper change allows you to select either RS422 or RS485 serial interface formats specific to your application
• Standard and low profile/half-height bracket included, ensuring easy installation into almost any system


• Add RS422 and RS485 (2 or 4-wire) support to a Desktop, Server or Embedded system
• For use in industrial environments with serial networking devices, high speed modems, monitoring equipment, long distance communication devices and printers
• Ideal for commercial and industrial applications such as POS networks, ATMs, bank teller stations, and CNC based production lines
• Works for industrial process control and factory automation applications

What’s in the package?

• 2 port PCI RS422/485 card
• Low profile (half-height) brackets
• Driver CD
• User Manual


Will this PCI card fit into my PCI-X slot?

It depends on your motherboard. This PCI card is keyed for 5V PCI and PCI-X slots. If your motherboard's PCI or PCI-X slots are keyed for 5V, this will work. If it is keyed for 3.3V, it will not. You can tell which your motherboard is keyed for by the location of the notch on the slot. To confirm whether this PCI card will fit into your PCI-X slot, refer to your motherboard's documentation.

Attribute Value
Bus Type PCI
Communication Interface Serial
Number of Ports 2
Maximum Baud Rate 128kbit/s
FIFO Size 256 B
2 In Global stock for delivery within 4 - 6 working days
Price Each
MYR 607.90
Per unit
1 +
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