Product comparison · 2 interface cards/adapters

StarTech.com 2-Port PCI Express Serial Interface Card, Dual Port PCIe to RS232 (DB9) Serial Card, 16C1050 UART, Low/Full Profile Brackets, COM Retention, For Wi vs StarTech.com U.3 to PCIe Adapter Card, PCIe

21specifications compared
18differ
3identical
19known for one product only

Key differences

Output interface
- 2-Port PCI Express Serial Interface Card, Dual Port PCIe to RS232 (DB9) Serial Card, 16C1050 UART, Low/Full Profile Brackets, COM Retention, For Wi:Serial
- U.3 to PCIe Adapter Card, PCIe:U.3
Product colour
- 2-Port PCI Express Serial Interface Card, Dual Port PCIe to RS232 (DB9) Serial Card, 16C1050 UART, Low/Full Profile Brackets, COM Retention, For Wi:Yellow
- U.3 to PCIe Adapter Card, PCIe:Red
LED indicators
- 2-Port PCI Express Serial Interface Card, Dual Port PCIe to RS232 (DB9) Serial Card, 16C1050 UART, Low/Full Profile Brackets, COM Retention, For Wi:Activity
- U.3 to PCIe Adapter Card, PCIe:Activity, Power
Operating temperature (T-T)
- 2-Port PCI Express Serial Interface Card, Dual Port PCIe to RS232 (DB9) Serial Card, 16C1050 UART, Low/Full Profile Brackets, COM Retention, For Wi:0 - 55 °C
- U.3 to PCIe Adapter Card, PCIe:0 - 60 °C
Storage temperature (T-T)
- 2-Port PCI Express Serial Interface Card, Dual Port PCIe to RS232 (DB9) Serial Card, 16C1050 UART, Low/Full Profile Brackets, COM Retention, For Wi:-40 - 75 °C
- U.3 to PCIe Adapter Card, PCIe:-40 - 80 °C
Operating relative humidity (H-H)
- 2-Port PCI Express Serial Interface Card, Dual Port PCIe to RS232 (DB9) Serial Card, 16C1050 UART, Low/Full Profile Brackets, COM Retention, For Wi:5 - 95%
- U.3 to PCIe Adapter Card, PCIe:20 - 80%
Width
- 2-Port PCI Express Serial Interface Card, Dual Port PCIe to RS232 (DB9) Serial Card, 16C1050 UART, Low/Full Profile Brackets, COM Retention, For Wi:66 mm
- U.3 to PCIe Adapter Card, PCIe:90 mm
Depth
- 2-Port PCI Express Serial Interface Card, Dual Port PCIe to RS232 (DB9) Serial Card, 16C1050 UART, Low/Full Profile Brackets, COM Retention, For Wi:67 mm
- U.3 to PCIe Adapter Card, PCIe:154 mm

Side by side

Differences highlightedShow differences only

Comparison of 21050-PC-SERIAL-LP, PEX4SFF8639U3
40 specifications	A StarTech.com 2-Port PCI Express Serial Interface Card, Dual Port PCIe to RS232 (DB9) Serial Card, 16C1050 UART, Low/Full Profile Brackets, COM Retention, For Wi Model 21050-PC-SERIAL-LP View product	B StarTech.com U.3 to PCIe Adapter Card, PCIe Model PEX4SFF8639U3 View product
Ports & interfaces1 differ
Output interfaceDiffers	Serial	U.3
Expansion card form factorKnown for one	Full-height / Low-profile	Unknown — not stated by the source
Expansion card standardKnown for one	PCI 2.0	Unknown — not stated by the source
Serial ports quantityKnown for one	2	Unknown — not stated by the source
Serial interface typeKnown for one	RS-232	Unknown — not stated by the source
Design2 differ
Product colourDiffers	Yellow	Red
LED indicatorsDiffers	Activity	Activity, Power
Hot-swapKnown for one	Unknown — not stated by the source	No
Mean time between failures (MTBF)Known for one	Unknown — not stated by the source	21693912 h
Featuresidentical
ChipsetKnown for one	ASIX - AX99100, ASIX - ZT3243LFEY	Unknown — not stated by the source
Baud rateKnown for one	921.6 Kbit/s	Unknown — not stated by the source
FIFO (First In, First Out)Known for one	256 B	Unknown — not stated by the source
Data bitsKnown for one	5, 6, 7, 8, 9	Unknown — not stated by the source
Parity bitKnown for one	Even, Mark, No, Odd, Space	Unknown — not stated by the source
Plug and PlayKnown for one	Unknown — not stated by the source	Yes
Operational conditions3 differ
Operating temperature (T-T)Differs	0 - 55 °C	0 - 60 °C
Storage temperature (T-T)Differs	-40 - 75 °C	-40 - 80 °C
Operating relative humidity (H-H)Differs	5 - 95%	20 - 80%
System requirementsidentical
Windows operating systems supportedKnown for one	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 x64, Windows 7, Windows 7 Ent	Unknown — not stated by the source
Linux operating systems supportedKnown for one	Yes	Unknown — not stated by the source
Server operating systems supportedKnown for one	Windows Server 2016, Windows Server 2019	Unknown — not stated by the source
Supported storage drive heightsKnown for one	Unknown — not stated by the source	5,7,9.5,12.5,15 mm
Weight & dimensions4 differ
WidthDiffers	66 mm	90 mm
DepthDiffers	67 mm	154 mm
HeightDiffers	18 mm	1.5 mm
WeightDiffers	160 g	62 g
Packaging data4 differ
Mounting brackets includedKnown for one	Yes	Unknown — not stated by the source
Package widthDiffers	145 mm	220 mm
Package depthDiffers	211 mm	158 mm
Package heightDiffers	41 mm	33 mm
Package weightDiffers	160 g	130 g
Screws includedKnown for one	Unknown — not stated by the source	Yes
Logistics data4 differ
Products per master (outer) caseDiffers	50 pc(s)	60 pc(s)
Master (outer) case widthDiffers	533 mm	455 mm
Master (outer) case lengthDiffers	452 mm	340 mm
Master (outer) case heightDiffers	345 mm	495 mm
Other featuresidentical
MaterialKnown for one	Steel	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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