Product comparison · 2 interface cards/adapters

StarTech.com 2-Port Serial PCIe Card, Dual-Port PCI Express to RS232/RS422/RS485 (DB9) Serial Card, Low-Profile Brackets Incl., 16C1050 UART, Windows/Linux, TAA vs 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

36specifications compared
13differ
23identical
5known for one product only

Key differences

Serial ports quantity
- 2-Port Serial PCIe Card, Dual-Port PCI Express to RS232/RS422/RS485 (DB9) Serial Card, Low-Profile Brackets Incl., 16C1050 UART, Windows/Linux, TAA:2
- 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:4
Data bits
- 2-Port Serial PCIe Card, Dual-Port PCI Express to RS232/RS422/RS485 (DB9) Serial Card, Low-Profile Brackets Incl., 16C1050 UART, Windows/Linux, TAA:5, 6, 7, 8, 9
- 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:5, 6, 8, 9
Width
- 2-Port Serial PCIe Card, Dual-Port PCI Express to RS232/RS422/RS485 (DB9) Serial Card, Low-Profile Brackets Incl., 16C1050 UART, Windows/Linux, TAA:102 mm
- 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:109 mm
Depth
- 2-Port Serial PCIe Card, Dual-Port PCI Express to RS232/RS422/RS485 (DB9) Serial Card, Low-Profile Brackets Incl., 16C1050 UART, Windows/Linux, TAA:105 mm
- 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:121 mm
Weight
- 2-Port Serial PCIe Card, Dual-Port PCI Express to RS232/RS422/RS485 (DB9) Serial Card, Low-Profile Brackets Incl., 16C1050 UART, Windows/Linux, TAA:57 g
- 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:60 g
Package width
- 2-Port Serial PCIe Card, Dual-Port PCI Express to RS232/RS422/RS485 (DB9) Serial Card, Low-Profile Brackets Incl., 16C1050 UART, Windows/Linux, TAA:144 mm
- 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:145 mm
Package depth
- 2-Port Serial PCIe Card, Dual-Port PCI Express to RS232/RS422/RS485 (DB9) Serial Card, Low-Profile Brackets Incl., 16C1050 UART, Windows/Linux, TAA:174 mm
- 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:212 mm
Package height
- 2-Port Serial PCIe Card, Dual-Port PCI Express to RS232/RS422/RS485 (DB9) Serial Card, Low-Profile Brackets Incl., 16C1050 UART, Windows/Linux, TAA:32 mm
- 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:40 mm

Side by side

Differences highlightedShow differences only

Comparison of 2S232422485-PC-CARD, PS74ADF-SERIAL-CARD
41 specifications	A StarTech.com 2-Port Serial PCIe Card, Dual-Port PCI Express to RS232/RS422/RS485 (DB9) Serial Card, Low-Profile Brackets Incl., 16C1050 UART, Windows/Linux, TAA Model 2S232422485-PC-CARD View product	B 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 Model PS74ADF-SERIAL-CARD View product
Ports & interfaces1 differ
Host interface	PCIe	PCIe
Output interface	Serial	Serial
Serial ports quantityDiffers	2	4
Serial interface type	RS-232/422/485	RS-232/422/485
Expansion card standardKnown for one	PCIe 2.0	Unknown — not stated by the source
Designidentical
Internal	Yes	Yes
Product colour	Black	Black
LED indicatorsKnown for one	Unknown — not stated by the source	Activity
Features1 differ
Chipset	ASIX - AX99100	ASIX - AX99100
Baud rate	921.6 Kbit/s	921.6 Kbit/s
FIFO (First In, First Out)	256 B	256 B
Data bitsDiffers	5, 6, 7, 8, 9	5, 6, 8, 9
Stop bits	1, 1.5, 2	1, 1.5, 2
Flow control support	Yes	Yes
Parity bit	Even, Mark, No, Odd, Space	Even, Mark, No, Odd, Space
Operational conditionsidentical
Operating temperature (T-T)	0 - 70 °C	0 - 70 °C
Storage temperature (T-T)	-20 - 80 °C	-20 - 80 °C
Operating relative humidity (H-H)	20 - 80%	20 - 80%
System requirements1 differ
Windows operating systems supportedDiffers	Windows 11 Enterprise x64, Windows 7 Professional x64, Windows 8.1 Pro, Windows 10, Windows 11 Home, Windows 7 Starter, Windows 8.1 Pro x64, Windows 10 Education, Windows 11 Pro, Windows 7 Starter x64, Windows 8.1 x64, Windows 10 Education x64, Windows 11 x64, Windows 7 Ultimate, Windows 10 Enterpri	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 Enterp
Linux operating systems supported	Yes	Yes
Server operating systems supported	Windows Server 2016, Windows Server 2019, Windows Server 2022	Windows Server 2016, Windows Server 2019, Windows Server 2022
Technical detailsidentical
Compliance certificates	RoHS, Trade Agreements Act (TAA)	RoHS, Trade Agreements Act (TAA)
Sustainability compliance	Yes	Yes
Weight & dimensions3 differ
WidthDiffers	102 mm	109 mm
DepthDiffers	105 mm	121 mm
Height	16 mm	16 mm
WeightDiffers	57 g	60 g
Packaging data4 differ
Cables included	Ribbon cable	Ribbon cable
Mounting brackets included	Yes	Yes
User guideKnown for one	Unknown — not stated by the source	Yes
Package widthDiffers	144 mm	145 mm
Package depthDiffers	174 mm	212 mm
Package heightDiffers	32 mm	40 mm
Package weightDiffers	147.6 g	273.2 g
Quick installation guideKnown for one	Yes	Unknown — not stated by the source
Logistics data3 differ
Products per master (outer) caseDiffers	75 pc(s)	50 pc(s)
Master (outer) case width	685 mm	685 mm
Master (outer) case lengthDiffers	355 mm	345 mm
Master (outer) case heightDiffers	310 mm	306 mm
Other featuresidentical
Cable lengthKnown for one	Unknown — not stated by the source	0.3 m
Electrostatic Discharge (ESD) protection	15 kV	15 kV

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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