PrologyParts Index

STARTECH.COM PS74ADF-SERIAL-CARD

4-Port Serial PCIe Card, Quad-Port RS232/RS422/RS485 Card, 16C1050 UART, ESD

MPNPS74ADF-SERIAL-CARDSTARTECH.COMOtherUpdated

Key facts

Part number
PS74ADF-SERIAL-CARD
Brand
STARTECH.COM
Category
Other
Price
AUD 438.89≈ USD 303 Reference price (RRP)
Availability
On request — ask for a quote

Overview

Add serial communication support to a desktop computer or Small Form Factor (SFF) system, using this 4-Port Serial PCI Express Card. The four DB9 ports can be independently configured to support RS-232, RS-422, and 2/4-wire RS-485 standards, for communication with compliant serial peripheral devices.

Per-Port Serial Configuration

This PCIe Serial Card is equipped with on-board DIP switches, enabling each DB9 serial port to operate in RS-232, RS-422, and/or RS-485 mode(s). The card features LED indicators per port, providing real-time monitoring of port activity.

Configurable External SATA Power

The PCI Express Serial Adapter Card features three power modes that are configurable via on-board jumpers, including 12V (1.5A per port), 5V (1.5A per port), or no power (RI), over pin 9.

Legacy Connectivity

This serial card enables the continued use of legacy serial devices, preventing down time and avoiding costly upgrades. The 4-Port PCIe Serial Card is an ideal system upgrade for a wide range of applications (e.g., point-of-sale terminals, PLCs, factory control and automation, scientific sensors, medical equipment, scanners, and oscilloscopes)

  • 4-PORT PCIE SERIAL CARD: On-board DIP switches allow each DB9 serial port to operate in its own independent mode, enabling the connection of RS-232, RS-422, and RS-485 devices; LED indicators to monitor data transmit/receive status
  • CONFIGURABLE POWER: Quad-Port PCI Express Serial Adapter Card features configurable power of 12V (1.5A per port), 5V (1.5A per port), or no power (RI) over pin 9 via auxiliary SATA power; Per-Port power modes are individually configurable via jumpers
  • APPLICATIONS: Ideal for desktops and servers, with a wide range of uses such as point-of-sale terminals, PLCs, factory control and automation, scientific sensors, medical equipment, scanners, and oscilloscopes; DB9 ports work with screw-locking cables
  • STANDARD & LOW PROFILE BRACKETS: TAA-Compliant Serial Card is equipped with two standard profile brackets (pre-installed), and includes four low-profile brackets for compatibility with small form factor desktops/servers
  • TECH SPECS: Asix AX99100 Chipset; 16C450 and 16C550 UART compatible; 4x 9-Pin D-Sub Ports; Max Baud 921.6Kbps per port; 256 Byte FIFO; COM Retention; Supports Windows and Linux; Odd/Even/Mark/Space/None Parity Modes; 5/6/7/8/9 Data Bits; PCIe 2.0 x1

Specifications

General

Number of Serial Ports (External)
4
Package Contents
4-Port Serial Card 4 x Low-Profile Bracket 3 x Ribbon Cable 1 x Quick-Start Guide
Environmentally Friendly
Yes
TAA Compliant
Yes
Environmental Compliance
Restriction of Hazardous Substances (RoHS)
Product Type
Serial Adapter

Manufacturer Website Address

Product Name
4-Port Serial Card
Weight (Approximate)
60 g
Form Factor
Plug-in Card
Height
15.2 mm
Width
109.2 mm
Depth
121.9 mm
Card Height
Low-profile
Platform Supported
Linux

PC

UART Type
16C950

Reference price history

Recorded reference and list prices over time. Not Prology selling prices.

Latest
AUD 438.89≈ USD 303
Oct 2026
Lowest recorded
AUD 438.89≈ USD 303
Highest recorded
AUD 438.89≈ USD 303
Recorded
2026
1 price point

AUD 438.89 rrp, recorded

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Buying STARTECH.COM

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Selling STARTECH.COM

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What is the STARTECH.COM PS74ADF-SERIAL-CARD?
The STARTECH.COM PS74ADF-SERIAL-CARD is an IT hardware part from STARTECH.COM – 4-Port Serial PCIe Card, Quad-Port RS232/RS422/RS485 Card, 16C1050 UART, ESD Protection.
How much does the STARTECH.COM PS74ADF-SERIAL-CARD cost?
The reference price on record is AUD 438.89 (Oct 2026). It is a reference figure, not a selling price — ask Prology for a firm quote.
Where can I buy the STARTECH.COM PS74ADF-SERIAL-CARD?
It is not listed on the Prology store yet. Prology sources STARTECH.COM on request — request a quote and we reply with a firm price and lead time within 1 business day.
Can I sell a used STARTECH.COM PS74ADF-SERIAL-CARD?
Yes. Prology buys used and surplus STARTECH.COM, including the PS74ADF-SERIAL-CARD. Get an offer — sell outright or trade in against your next order.

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