Product comparison · 2 interface cards/adapters

StarTech.com 1-port PCI Express RS232 Serial Adapter Card - PCIe RS232 Serial Host Controller Card - PCIe to Serial DB9 - 16550 UART - Low Profile Expansion Car vs StarTech.com 2S1P Native PCI Express Parallel Serial Combo Card with 16550 UART

34specifications compared
15differ
19identical
5known for one product only

Key differences

Expansion card standard
- 1-port PCI Express RS232 Serial Adapter Card - PCIe RS232 Serial Host Controller Card - PCIe to Serial DB9 - 16550 UART - Low Profile Expansion Car:PCI 1.1
- 2S1P Native PCI Express Parallel Serial Combo Card with 16550 UART:PCIe 1.0a
Serial ports quantity
- 1-port PCI Express RS232 Serial Adapter Card - PCIe RS232 Serial Host Controller Card - PCIe to Serial DB9 - 16550 UART - Low Profile Expansion Car:1
- 2S1P Native PCI Express Parallel Serial Combo Card with 16550 UART:2
Product colour
- 1-port PCI Express RS232 Serial Adapter Card - PCIe RS232 Serial Host Controller Card - PCIe to Serial DB9 - 16550 UART - Low Profile Expansion Car:Green
- 2S1P Native PCI Express Parallel Serial Combo Card with 16550 UART:Green, Stainless steel
Chipset
- 1-port PCI Express RS232 Serial Adapter Card - PCIe RS232 Serial Host Controller Card - PCIe to Serial DB9 - 16550 UART - Low Profile Expansion Car:ASIX - MCS9922CV-AA
- 2S1P Native PCI Express Parallel Serial Combo Card with 16550 UART:ASIX - MCS9901CV-CC
Width
- 1-port PCI Express RS232 Serial Adapter Card - PCIe RS232 Serial Host Controller Card - PCIe to Serial DB9 - 16550 UART - Low Profile Expansion Car:80 mm
- 2S1P Native PCI Express Parallel Serial Combo Card with 16550 UART:120 mm
Weight
- 1-port PCI Express RS232 Serial Adapter Card - PCIe RS232 Serial Host Controller Card - PCIe to Serial DB9 - 16550 UART - Low Profile Expansion Car:44 g
- 2S1P Native PCI Express Parallel Serial Combo Card with 16550 UART:112 g
Package width
- 1-port PCI Express RS232 Serial Adapter Card - PCIe RS232 Serial Host Controller Card - PCIe to Serial DB9 - 16550 UART - Low Profile Expansion Car:143 mm
- 2S1P Native PCI Express Parallel Serial Combo Card with 16550 UART:145 mm
Package height
- 1-port PCI Express RS232 Serial Adapter Card - PCIe RS232 Serial Host Controller Card - PCIe to Serial DB9 - 16550 UART - Low Profile Expansion Car:32 mm
- 2S1P Native PCI Express Parallel Serial Combo Card with 16550 UART:31 mm

Side by side

Differences highlightedShow differences only

Comparison of PEX1S553LP, PEX2S5531P
39 specifications	A StarTech.com 1-port PCI Express RS232 Serial Adapter Card - PCIe RS232 Serial Host Controller Card - PCIe to Serial DB9 - 16550 UART - Low Profile Expansion Car Model PEX1S553LP View product	B StarTech.com 2S1P Native PCI Express Parallel Serial Combo Card with 16550 UART Model PEX2S5531P View product
Ports & interfaces2 differ
Host interface	PCIe	PCIe
Output interface	Serial	Serial
Expansion card standardDiffers	PCI 1.1	PCIe 1.0a
Serial ports quantityDiffers	1	2
Serial interface type	RS-232	RS-232
Parallel ports quantityKnown for one	Unknown — not stated by the source	1
Peripheral (Molex) power connectors (4-pin)Known for one	1	Unknown — not stated by the source
Design1 differ
Internal	Yes	Yes
Product colourDiffers	Green	Green, Stainless steel
Features1 differ
ChipsetDiffers	ASIX - MCS9922CV-AA	ASIX - MCS9901CV-CC
Baud rate	460.8 Kbit/s	460.8 Kbit/s
FIFO (First In, First Out)	128 B	128 B
Flow Control typeKnown for one	Unknown — not stated by the source	DTR/DSR, RTS/CTS, XON/XOFF
Supported protocolsKnown for one	Unknown — not stated by the source	EPP, ECP, SPP, PS/2
Operational conditionsidentical
Operating temperature (T-T)	-10 - 80 °C	-10 - 80 °C
Storage temperature (T-T)	-20 - 100 °C	-20 - 100 °C
Operating relative humidity (H-H)	5 - 85%	5 - 85%
System requirements3 differ
Windows operating systems supportedDiffers	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 11, Windows 11 x64, Windows 2000, Windows 2000 Professional, Windows 7 Enterprise, Windows 7 Enterprise x64, Windows 7 H	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 2000 Professional, Windows 7 Enterprise, Windows 7 Enterprise x64, Windows 7 Home Basic, Windows 7 Home Ba
Mac operating systems supportedDiffers	Mac 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	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 supported	Yes	Yes
Server operating systems supported	Windows Server 2003, Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016, Windows Server 2019	Windows Server 2003, Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016, Windows Server 2019
Other operating systems supportedDiffers	DOS, Windows XP Embedded	Windows Embedded POSReady 2009, Windows Embedded Standard 2009
Technical detailsidentical
Compliance certificates	CE, RoHS	CE, RoHS
Weight & dimensions2 differ
WidthDiffers	80 mm	120 mm
Depth	105 mm	105 mm
Height	20 mm	20 mm
WeightDiffers	44 g	112 g
Packaging data3 differ
Drivers included	Yes	Yes
Manual	Yes	Yes
Package widthDiffers	143 mm	145 mm
Package depth	174 mm	174 mm
Package heightDiffers	32 mm	31 mm
Package weightDiffers	130 g	208 g
Logistics data3 differ
Harmonized System (HS) code	84733020	84733020
Products per master (outer) case	75 pc(s)	75 pc(s)
Master (outer) case widthDiffers	365 mm	355 mm
Master (outer) case lengthDiffers	692 mm	679 mm
Master (outer) case heightDiffers	315 mm	320 mm
Other featuresidentical
Compatible operating systemsKnown for one	Linux, Mac OS 10.4.x	Unknown — not stated by the source

A dash means the value is not stated by the source. Unknown values are never counted for or against a product, and there is no overall score.

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