StarTech.com 4 Port Native PCI Express RS232 Serial Adapter Card with 16550 UART

Manufacturer: Startech | Model: PEX4S553 | Product ID: 2910 | Warranty: Lifetime Warranty
£88.58 (inc. VAT)
Availability: 0 in stock

Product Technical Specification

Ports & interfaces
Host interfacePCIe
Output interfaceSerial
Serial ports quantity4
Serial interface typeRS-232
Design
InternalYes
Mean time between failures (MTBF)26280
CertificationCE, FCC, REACH
Features
ChipsetASIX - MCS9904CV-AA
Baud rate128
FIFO (First In, First Out)256
Data bits5,6,7,8
Operational conditions
Operating temperature (T-T)0 - 50
Storage temperature (T-T)-20 - 60
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 Pro,Windows 10 Pro x64,Windows 2000,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,Windows 95,Windows 98SE,Windows Vista Business,Windows Vista Business x64,Windows Vista Enterprise,Windows Vista Enterprise x64,Windows Vista Home Basic,Windows Vista Home Basic x64,Windows Vista Home Premium,Windows Vista Home Premium x64,Windows Vista Ultimate,Windows Vista Ultimate x64,Windows XP Home,Windows XP Home x64,Windows XP Professional,Windows XP Professional x64
Mac operating systems supportedMac OS X 10.10 Yosemite,Mac OS X 10.4 Tiger,Mac OS X 10.5 Leopard,Mac OS X 10.6 Snow Leopard,Mac OS X 10.7 Lion,Mac OS X 10.8 Mountain Lion,Mac OS X 10.9 Mavericks
Linux operating systems supportedYes
Server operating systems supportedWindows Server 2003,Windows Server 2008 R2,Windows Server 2012,Windows Server 2012 R2,Windows Server 2016,Windows Server 2019
Other operating systems supportedWindows Embedded POSReady 2009,Windows Embedded Standard 2009,Windows XP Embedded
Technical details
Sustainability certificatesRoHS
Weight & dimensions
Width130
Depth120
Height19
Weight74
Packaging data
Quantity1
Mounting brackets includedYes
Drivers includedYes
ManualYes
Package width141
Package depth170
Package height30
Package weight230
Logistics data
Harmonized System (HS) code84733020

Delivery Options

Economy Delivery
FREE
Economy Delivery

Economy Delivery (UK)

Estimated delivery date: Wed 26th Aug 2026 to Sat 29th Aug 2026
Fast & Tracked by Courier
£6.95
Fast & Tracked by Courier

Fast & Tracked by Courier (UK)

Estimated delivery date: Tue 25th Aug 2026 to Thu 27th Aug 2026
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Add 4 RS-232 serial ports to your standard or small form factor computer through a PCI Express expansion slot
The PEX4S553 4-Port Native PCI Express RS232 Serial Adapter Card with 16550 UART lets you add 4 RS232 (DB9) serial ports, using a single PCI Express expansion slot.
Based on a native single-chip design, this 4-port serial adapter card allows you to harness the full capability offered by PCI Express (PCIe), while reducing the load applied to the CPU by as much as 48% over conventional bridge-chip serial cards.
The RS232 Serial Adapter Card includes 4 half-height/low-profile brackets, allowing the card to be installed into almost any PC case, regardless of form factor.
Backed by a StarTech.com Lifetime warranty and free lifetime technical support.
The StarTech.com Advantage
- Native single-chip, single lane PCI Express chipset delivers true PCIe performance, up to 48% more efficient than bridge chip designs
- Standard and low profile/half-height brackets included to ensure fitment in any system
Ports & interfaces
Host interfacePCIe
Output interfaceSerial
Serial ports quantity4
Serial interface typeRS-232
Design
InternalYes
Mean time between failures (MTBF)26280
CertificationCE, FCC, REACH
Features
ChipsetASIX - MCS9904CV-AA
Baud rate128
FIFO (First In, First Out)256
Data bits5,6,7,8
Operational conditions
Operating temperature (T-T)0 - 50
Storage temperature (T-T)-20 - 60
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 Pro,Windows 10 Pro x64,Windows 2000,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,Windows 95,Windows 98SE,Windows Vista Business,Windows Vista Business x64,Windows Vista Enterprise,Windows Vista Enterprise x64,Windows Vista Home Basic,Windows Vista Home Basic x64,Windows Vista Home Premium,Windows Vista Home Premium x64,Windows Vista Ultimate,Windows Vista Ultimate x64,Windows XP Home,Windows XP Home x64,Windows XP Professional,Windows XP Professional x64
Mac operating systems supportedMac OS X 10.10 Yosemite,Mac OS X 10.4 Tiger,Mac OS X 10.5 Leopard,Mac OS X 10.6 Snow Leopard,Mac OS X 10.7 Lion,Mac OS X 10.8 Mountain Lion,Mac OS X 10.9 Mavericks
Linux operating systems supportedYes
Server operating systems supportedWindows Server 2003,Windows Server 2008 R2,Windows Server 2012,Windows Server 2012 R2,Windows Server 2016,Windows Server 2019
Other operating systems supportedWindows Embedded POSReady 2009,Windows Embedded Standard 2009,Windows XP Embedded
Technical details
Sustainability certificatesRoHS
Weight & dimensions
Width130
Depth120
Height19
Weight74
Packaging data
Quantity1
Mounting brackets includedYes
Drivers includedYes
ManualYes
Package width141
Package depth170
Package height30
Package weight230
Logistics data
Harmonized System (HS) code84733020

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