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Home Cables & Adapters Startech 4-port PCI Express RS232 Serial Adapter Card, PCIe...

Startech 4-port PCI Express RS232 Serial Adapter Card, PCIe RS232 Serial Host Controller Card, PCIe to Serial DB9 Card, 16950 UART, Desktop Expansion Card, Windows, macOS, Linux - Full/Low-Profile Brackets (PEX4S953) - Serial adapter - PCI Express x1 - RS-232 x 4

MPN PEX4S953 EAN 0065030888257 Startech
Trade customers only
£90.26 ex VAT £108.31 inc VAT
In stock · 17 available
Manufacturer datasheet →
Trade customers only: orders need a verified business account. Prices ex VAT; VAT is added at checkout.
Quote-led: a person reviews pricing and stock before you commit.
Genuine stock with the manufacturer warranty intact.
Structured returns with credit notes when something is wrong.
Questions? 01224 600337 — Aberdeen & across the UK.
Fresh data: stock and pricing updated 22 Oct 2026.

Description

Manufacturer Code: PEX4S953

Overview

Startech 4-port PCI Express RS232 Serial Adapter Card, PCIe RS232 Serial Host Controller Card, PCIe to Serial DB9 Card, 16950 UART, Desktop Expansion Card, Windows, macOS, Linux - Full/Low-Profile Brackets (PEX4S953) - Serial adapter - PCI Express x1 - RS is available through DCS Components. It sits within the Cables & Adapters category.

Key product details

  • Full/Low-Profile Brackets (PEX4S953)
  • Serial adapter
  • PCI Express x1
  • RS

Procurement and setup support

Available for quote while live availability remains in stock. DCS can help with procurement, compatibility checks, configuration planning, installation support and long-term managed IT lifecycle support.

EAN: 0065030888257

Specifications

Ports & interfaces
Host interfacePCIe
Output interfaceSerial
Expansion card form factorFull-height / Low-profile
Serial ports quantity4
Serial interface typeRS-232
Design
InternalYes
Product colourGreen
Mean time between failures (MTBF)214358 h
CertificationCE, FCC, Microsoft WHQL
Features
ChipsetAsix AX99100
Baud rate921.6 Kbit/s
FIFO (First In, First Out)256 B
Data bits5, 6, 7, 8, 9
Stop bits1, 1.5, 2
Parity bitEven, Mark, No, Odd, Space
Flow Control typeNo, RTS/CTS, XON/XOFF
Operational conditions
Operating temperature (T-T)-10 - 80 °C
Storage temperature (T-T)-20 - 100 °C
Operating relative humidity (H-H)5 - 85%
System requirements
Windows operating systems supportedWindows 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 supportedYes
Server operating systems supportedWindows Server 2003, Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016
Technical details
Compliance certificatesRoHS
Weight & dimensions
Width63 mm
Depth75 mm
Height15 mm
Weight50 g
Packaging data
Quantity1
Cables includedSerial
Mounting brackets includedYes
Quick installation guideYes
Package width150 mm
Package depth210 mm
Package height50 mm
Package weight371 g
Logistics data
Harmonized System (HS) code84733020
Products per master (outer) case16 pc(s)
Master (outer) case width340 mm
Master (outer) case length480 mm
Master (outer) case height240 mm
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