Product comparison · 2 interface cards/adapters

StarTech.com 2-Port PCI Express Serial Card, Dual Port PCIe to RS232 (DB9) Serial Card, 16C1050 UART, Standard or Low Profile Brackets, COM Retention, For Windo vs StarTech.com Quad M.2 PCIe Adapter Card, PCIe x16 to Quad NVMe or AHCI M.2 SSDs, PCI Express 4.0, 7.8GBps/Drive, Bifurcation Required, Windows/Linux Compatible

22specifications compared
19differ
3identical
20known for one product only

Key differences

Output interface
- 2-Port PCI Express Serial Card, Dual Port PCIe to RS232 (DB9) Serial Card, 16C1050 UART, Standard or Low Profile Brackets, COM Retention, For Windo:Serial
- Quad M.2 PCIe Adapter Card, PCIe x16 to Quad NVMe or AHCI M.2 SSDs, PCI Express 4.0, 7.8GBps/Drive, Bifurcation Required, Windows/Linux Compatible:M.2
Expansion card standard
- 2-Port PCI Express Serial Card, Dual Port PCIe to RS232 (DB9) Serial Card, 16C1050 UART, Standard or Low Profile Brackets, COM Retention, For Windo:PCI 2.0
- Quad M.2 PCIe Adapter Card, PCIe x16 to Quad NVMe or AHCI M.2 SSDs, PCI Express 4.0, 7.8GBps/Drive, Bifurcation Required, Windows/Linux Compatible:PCIe 4.0
Product colour
- 2-Port PCI Express Serial Card, Dual Port PCIe to RS232 (DB9) Serial Card, 16C1050 UART, Standard or Low Profile Brackets, COM Retention, For Windo:Yellow
- Quad M.2 PCIe Adapter Card, PCIe x16 to Quad NVMe or AHCI M.2 SSDs, PCI Express 4.0, 7.8GBps/Drive, Bifurcation Required, Windows/Linux Compatible:Red
LED indicators
- 2-Port PCI Express Serial Card, Dual Port PCIe to RS232 (DB9) Serial Card, 16C1050 UART, Standard or Low Profile Brackets, COM Retention, For Windo:Activity
- Quad M.2 PCIe Adapter Card, PCIe x16 to Quad NVMe or AHCI M.2 SSDs, PCI Express 4.0, 7.8GBps/Drive, Bifurcation Required, Windows/Linux Compatible:Yes
Operating temperature (T-T)
- 2-Port PCI Express Serial Card, Dual Port PCIe to RS232 (DB9) Serial Card, 16C1050 UART, Standard or Low Profile Brackets, COM Retention, For Windo:0 - 55 °C
- Quad M.2 PCIe Adapter Card, PCIe x16 to Quad NVMe or AHCI M.2 SSDs, PCI Express 4.0, 7.8GBps/Drive, Bifurcation Required, Windows/Linux Compatible:-40 - 80 °C
Storage temperature (T-T)
- 2-Port PCI Express Serial Card, Dual Port PCIe to RS232 (DB9) Serial Card, 16C1050 UART, Standard or Low Profile Brackets, COM Retention, For Windo:-40 - 75 °C
- Quad M.2 PCIe Adapter Card, PCIe x16 to Quad NVMe or AHCI M.2 SSDs, PCI Express 4.0, 7.8GBps/Drive, Bifurcation Required, Windows/Linux Compatible:-40 - 85 °C
Operating relative humidity (H-H)
- 2-Port PCI Express Serial Card, Dual Port PCIe to RS232 (DB9) Serial Card, 16C1050 UART, Standard or Low Profile Brackets, COM Retention, For Windo:5 - 95%
- Quad M.2 PCIe Adapter Card, PCIe x16 to Quad NVMe or AHCI M.2 SSDs, PCI Express 4.0, 7.8GBps/Drive, Bifurcation Required, Windows/Linux Compatible:15 - 90%
Width
- 2-Port PCI Express Serial Card, Dual Port PCIe to RS232 (DB9) Serial Card, 16C1050 UART, Standard or Low Profile Brackets, COM Retention, For Windo:65 mm
- Quad M.2 PCIe Adapter Card, PCIe x16 to Quad NVMe or AHCI M.2 SSDs, PCI Express 4.0, 7.8GBps/Drive, Bifurcation Required, Windows/Linux Compatible:290 mm

Side by side

Differences highlightedShow differences only

Comparison of 21050-PC-SERIAL-CARD, QUAD-M2-PCIE-CARD-B
42 specifications	A StarTech.com 2-Port PCI Express Serial Card, Dual Port PCIe to RS232 (DB9) Serial Card, 16C1050 UART, Standard or Low Profile Brackets, COM Retention, For Windo Model 21050-PC-SERIAL-CARD View product	B StarTech.com Quad M.2 PCIe Adapter Card, PCIe x16 to Quad NVMe or AHCI M.2 SSDs, PCI Express 4.0, 7.8GBps/Drive, Bifurcation Required, Windows/Linux Compatible Model QUAD-M2-PCIE-CARD-B View product
Ports & interfaces2 differ
Output interfaceDiffers	Serial	M.2
Expansion card form factorKnown for one	Full-height / Low-profile	Unknown — not stated by the source
Expansion card standardDiffers	PCI 2.0	PCIe 4.0
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
Number of M.2 (M) slotsKnown for one	Unknown — not stated by the source	4
Design2 differ
Product colourDiffers	Yellow	Red
LED indicatorsDiffers	Activity	Yes
Mean time between failures (MTBF)Known for one	Unknown — not stated by the source	4353192 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
Flow control supportKnown for one	Yes	Unknown — not stated by the source
Parity bitKnown for one	Even, Mark, No, Odd, Space	Unknown — not stated by the source
Data transfer rate (max)Known for one	Unknown — not stated by the source	7.8 Gbit/s
Plug and PlayKnown for one	Unknown — not stated by the source	Yes
Operational conditions3 differ
Operating temperature (T-T)Differs	0 - 55 °C	-40 - 80 °C
Storage temperature (T-T)Differs	-40 - 75 °C	-40 - 85 °C
Operating relative humidity (H-H)Differs	5 - 95%	15 - 90%
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
Technical detailsidentical
Compliance certificatesKnown for one	CE, RoHS	Unknown — not stated by the source
Weight & dimensions4 differ
WidthDiffers	65 mm	290 mm
DepthDiffers	67 mm	170 mm
HeightDiffers	18 mm	30 mm
WeightDiffers	51 g	150 g
Packaging data4 differ
Mounting brackets includedKnown for one	Yes	Unknown — not stated by the source
Package widthDiffers	144 mm	174 mm
Package depthDiffers	212 mm	292 mm
Package heightDiffers	43 mm	33 mm
Package weightDiffers	200 g	150 g
Screws includedKnown for one	Unknown — not stated by the source	Yes
Logistics data4 differ
Harmonized System (HS) codeKnown for one	84733020	Unknown — not stated by the source
Products per master (outer) caseDiffers	50 pc(s)	30 pc(s)
Master (outer) case widthDiffers	530 mm	501 mm
Master (outer) case lengthDiffers	440 mm	382 mm
Master (outer) case heightDiffers	340 mm	328 mm

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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