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StarTech.com 4-port PCI Express RS232 Serial Adapter Card - PCIe RS232 Serial Host Controller Card - PCIe to Serial DB9 Card - 16950 UART - Expansion Card - Windows/Linux - TAA

1 offer · 1 shop · last checked 2026-10-29 20:18 (Europe/Berlin)

Host interface
PCIe
Output interface
Serial
Expansion card form factor
Full-height / Low-profile
Serial ports quantity
4
Product image: StarTech.com 4-port PCI Express RS232 Serial Adapter Card - PCIe RS232 Serial Host Controller Card - PCIe to Serial DB9 Card - 16950 UART - Expansion Card - Windows/Linux - TAA1 / 6

Delivered total

EUR 150,51

Sold by 0815 DE · StarTech.com 4 Port Serielle PCI Express RS232 Adapter Karte - PCIe RS232 Serielle Host Controller Karte - PCIe auf Serielle DB9 Karte - 16950 UART - Erweiterungskarte - Windows & Linux (PEX4S953) · New

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1 live offer

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Observed item prices

0815 DE, one listing

This is the item price of one seller's listing, not a delivered total and not the best price across sellers.

Observed prices over time

Latest
EUR150,5129 Oct 2026
Lowest
Unchanged since 22 Oct 2026
Observed prices over time
DayLowestHighestLastChecks
29 Oct 2026EUR150,51EUR150,51EUR150,513
28 Oct 2026EUR150,51EUR150,51EUR150,513
27 Oct 2026EUR150,51EUR150,51EUR150,513
26 Oct 2026EUR150,51EUR150,51EUR150,512
25 Oct 2026EUR150,51EUR150,51EUR150,513
24 Oct 2026EUR150,51EUR150,51EUR150,513
23 Oct 2026EUR150,51EUR150,51EUR150,512
22 Oct 2026EUR150,51EUR150,51EUR150,511

About this product

StarTech.com 4-port PCI Express RS232 Serial Adapter Card - PCIe RS232 Serial Host Controller Card - PCIe to Serial DB9 Card - 16950 UART - Expansion Card - Windows/Linux - TAA, PCIe, Serial, Full-height / Low-profile, RS-232, Green, 214358 h

Read the full source description

PCI Express to Serial Adapter | 921.6Kbps | Windows® and Linux® Compatible

This PCI Express RS232 serial adapter card lets you add four RS232 (DB9) serial ports to your computer through a PCI Express (PCIe) slot, as if they were native serial ports. The 4 port PCIe serial card enables you to interact with serial devices, such as card readers, printers, PIN pads, and modems, at speeds of up to 921.6Kbps.

Maximum Compatibility

With broad OS support, including for Windows and Linux, this multiport PCI E serial card is easy to integrate into mixed environments. The card comes pre-configured with a full-sized bracket, and includes an optional low-profile bracket, so installation is easy regardless of the case form factor. This expansion card is a direct replacement for PEX4S952 .

Experience Optimal Technology

This PCIe to serial adapter supports the following features:

• Industry standard 16950 UART compatible • Supports max baud rate of up-to 921.6Kbps • Provides 5/12V power output on Pin 9 when external power is connected • 256-byte depth FIFO cache per transmitter and receiver • Supports 9, 8, 7, 6, 5 data bits (one per port) • Asix AX99100A chipset • Base PCI Express 1.1 compliant

The Choice of IT Pros Since 1985

StarTech.com conducts thorough compatibility and performance testing on all our products to ensure we are meeting or exceeding industry standards and providing high-quality products to IT Professionals. Our local StarTech.com Technical Advisors have broad product expertise and work directly with our StarTech.com Engineers to provide support for our customers both pre and post-sales.

Text from Specs Icecat.

Specifications

40 specifications

Product data: Specs Icecat

GTIN
00065030888257
MPN
PEX4S953
Ports & interfaces5
Host interface
PCIe
Output interface
Serial
Expansion card form factor
Full-height / Low-profile
Serial ports quantity
4
Serial interface type
RS-232
Design4
Internal
Yes
Product colour
Green
Mean time between failures (MTBF)
214358 h
Certification
CE, FCC, Microsoft WHQL
Features7
Chipset
Asix AX99100
Baud rate
921.6 Kbit/s
FIFO (First In, First Out)
256 B
Data bits
5, 6, 7, 8, 9
Stop bits
1, 1.5, 2
Parity bit
Even, Mark, No, Odd, Space
Flow Control type
No, RTS/CTS, XON/XOFF
Operational conditions3
Operating temperature (T-T)
-10 - 80 °C
Storage temperature (T-T)
-20 - 100 °C
Operating relative humidity (H-H)
5 - 85%
System requirements3
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 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 2003, Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016
Technical details1
Compliance certificates
RoHS
Weight & dimensions4
Width
63 mm
Depth
75 mm
Height
15 mm
Weight
50 g
Packaging data8
Quantity
1
Cables included
Serial
Mounting brackets included
Yes
Quick installation guide
Yes
Package width
152 mm
Package depth
216 mm
Package height
54 mm
Package weight
371 g
Logistics data5
Harmonized System (HS) code
84733020
Products per master (outer) case
16 pc(s)
Master (outer) case width
344 mm
Master (outer) case length
474 mm
Master (outer) case height
246 mm