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StarTech.com 4-Port Serial PCIe Card, Quad-Port PCI Express to RS232/RS422/RS485 (DB9) Serial Card, Low-Profile Bracket Incl., 16C1050 UART, Windows/Linux, TAA Compliant - Level-4 ESD Protection

Internal
User guide
Flow control support
Sustainability compliance
Mounting brackets included
StarTech.com 4-Port Serial PCIe Card, Quad-Port PCI Express to RS232/RS422/RS485 (DB9) Serial Card, Low-Profile Bracket Incl., 16C1050 UART, Windows/Linux, TAA Compliant - Level-4 ESD Protection, P...
Brand: StarTech.com
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At a Glance

Key highlights and verified hardware specifications

Detailed specs deep dive2 PDF manuals available
Weight
60 g
Width
109 mm
Height
16 mm
Depth
121 mm
Chipset
ASIX - AX99100
Internal
Internal
Lowest Price
148,99 kr
Andote Score
5.5/10
Price Tier Avg
6.1/10
Category Avg
6.1/10
Price Trend
Rising

Andote Analysis

Rated: 20 Sep 2026Evaluated at kr162.99
Hardware5.5/10
Andote Score5.5/10
Score Deciding Factors6 Key drivers
✓Competitive Price£162
Favorable price-to-performance ratio in categoryHigh Value
!Modest Ports Quantity4.0
Entry-level benchmark rating limits overall score6.0/10
✓Lightweight Weight60g
Top-tier capability in this category10.0/10
✕Limited Width109.0
Significantly below category average benchmark4.0/10
✕Limited Depth121.0
Significantly below category average benchmark4.0/10
✕Limited Height16.0
Significantly below category average benchmark4.0/10
How We Calculate This Score

All parameters are evaluated as per the price. Our algorithm calculates each hardware specification's relative efficiency against peer products in the category based on its selling price, giving you an objective measure of value per pound. User ratings are not included in this calculation.

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Price History

Current:162,99 kr
Lowest:148,99 kr
Average:148,99 kr
Price is risingCurrent price is 14 kr (9%) above typical price. Consider setting a price alert or waiting for a drop.
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About StarTech.com 4-Port Serial PCIe Card, Quad-Port PCI Express to RS232/RS422/RS485 (DB9) Serial Card, Low-Profile Bracket Incl., 16C1050 UART, Windows/Linux, TAA Compliant - Level-4 ESD Protection

Detailed specs deep dive
Official user manuals, spec sheets, and 2 PDF documents are available for this model in the Detailed specs deep dive
Brand: StarTech.com • Model: 4-Port Serial PCIe Card, Quad-Port PCI Express to RS232/RS422/RS485 (DB9) Serial Card, Low-Profile Bracket Incl., 16C1050 UART, Windows/Linux, TAA Compliant - Level-4 ESD ProtectionModel: PS74ADF-SERIAL-CARDHardware Score: 5.5/10Andote Score: 5.5/10Price-Tier Avg: 6.1/10Category Avg: 6.1/10

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. Add four RS-232, RS-422, or RS-485-capable DB9 Serial Ports to a desktop computer via PCIe x1 Expansion Card. 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). Ports & interfaces. Host interface. PCIe. Output interface. Serial. Serial ports quantity. 4. Serial interface type. RS-232/422/485. Design. Internal. Yes. Product colour. Black. LED indicators. Activity. Features. Chipset. ASIX - AX99100. Baud rate. 921.6 Kbit/s. FIFO (First In, First Out). 256 B. Data bits. 5, 6, 8, 9. Stop bits. 1, 1.5, 2. Parity bit. Even, Mark, No, Odd, Space. Flow control support. Yes. Operational conditions. Operating temperature (T-T). 0 - 70 °C. Storage temperature (T-T). -20 - 80 °C. Operating relative humidity (H-H). 20 - 80%. Technical details. Compliance certificates. RoHS, Trade Agreements Act (TAA). Sustainability compliance. Yes. System requirements. Windows operating systems supported. Windows 10, Windows 10 Education, Windows 10 Education x64, Windows 10 Enterprise, Windows 10 Enterprise x64, Windows 10 Home, Windows 10 Home x64, Windows 10 IOT Core, Windows 10 IoT Enterprise, Windows 10 Pro, Windows 10 Pro x64, Windows 10 x64, Windows 11, Windows 11 Enterprise, Windows 11 Enterprise x64, Windows 11 Home, Windows 11 Pro, Windows 11 x64, Windows 7, Windows 7 Enterprise, Windows 7 Enterprise x64, Windows 7 Home Basic, Windows 7 Home Basic x64, Windows 7 Home Premium, Windows 7 Home Premium x64, Windows 7 Professional, Windows 7 Professional x64, Windows 7 Starter, Windows 7 Starter x64, Windows 7 Ultimate, Windows 7 Ultimate x64, Windows 7 x64, Windows 8, Windows 8 Enterprise, Windows 8 Enterprise x64, Windows 8 Pro, Windows 8 Pro x64, Windows 8 x64, Windows 8.1, Windows 8.1 Enterprise, Windows 8.1 Enterprise x64, Windows 8.1 Pro, Windows 8.1 Pro x64, Windows 8.1 x64. Linux operating systems supported. Yes. Server operating systems supported. Windows Server 2016, Windows Server 2019, Windows Server 2022. Weight & dimensions. Width. 109 mm. Depth. 121 mm. Height. 16 mm. Weight. 60 g. Packaging data. Cables included. Ribbon cable. Mounting brackets included. Yes. User guide. Yes. Package width. 145 mm. Package depth. 212 mm. Package height. 40 mm. Package weight. 273.2 g. Logistics data. Products per master (outer) case. 50 pc(s). Master (outer) case width. 685 mm. Master (outer) case length. 345 mm. Master (outer) case height. 306 mm. Other features. Cable length. 0.3 m. Electrostatic Discharge (ESD) protection. 15 kV. manual pdf. leaflet

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