Product comparison · 2 interface cards/adapters

StarTech.com U.2 (SFF-8643) to M.2 PCI Express vs StarTech.com Discontinued and replaced by PEXUSB311AC3 - Dual Port USB 3.1 Card - 1x USB-C - 1x USB-A - 10Gbps per port - Expansion Card - USB 3.1 PCI-E Card -

18specifications compared
13differ
5identical
17known for one product only

Key differences

Host interface
- U.2 (SFF-8643) to M.2 PCI Express:M.2
- Discontinued and replaced by PEXUSB311AC3 - Dual Port USB 3.1 Card - 1x USB-C - 1x USB-A - 10Gbps per port - Expansion Card - USB 3.1 PCI-E Card -:PCIe
Output interface
- U.2 (SFF-8643) to M.2 PCI Express:U.2
- Discontinued and replaced by PEXUSB311AC3 - Dual Port USB 3.1 Card - 1x USB-C - 1x USB-A - 10Gbps per port - Expansion Card - USB 3.1 PCI-E Card -:USB 3.2 Gen 1 (3.1 Gen 1)
Product colour
- U.2 (SFF-8643) to M.2 PCI Express:Red
- Discontinued and replaced by PEXUSB311AC3 - Dual Port USB 3.1 Card - 1x USB-C - 1x USB-A - 10Gbps per port - Expansion Card - USB 3.1 PCI-E Card -:Black
Operating temperature (T-T)
- U.2 (SFF-8643) to M.2 PCI Express:0 - 55 °C
- Discontinued and replaced by PEXUSB311AC3 - Dual Port USB 3.1 Card - 1x USB-C - 1x USB-A - 10Gbps per port - Expansion Card - USB 3.1 PCI-E Card -:5 - 50 °C
Storage temperature (T-T)
- U.2 (SFF-8643) to M.2 PCI Express:-40 - 85 °C
- Discontinued and replaced by PEXUSB311AC3 - Dual Port USB 3.1 Card - 1x USB-C - 1x USB-A - 10Gbps per port - Expansion Card - USB 3.1 PCI-E Card -:-20 - 60 °C
Operating relative humidity (H-H)
- U.2 (SFF-8643) to M.2 PCI Express:15 - 90%
- Discontinued and replaced by PEXUSB311AC3 - Dual Port USB 3.1 Card - 1x USB-C - 1x USB-A - 10Gbps per port - Expansion Card - USB 3.1 PCI-E Card -:20 - 80%
Width
- U.2 (SFF-8643) to M.2 PCI Express:21 mm
- Discontinued and replaced by PEXUSB311AC3 - Dual Port USB 3.1 Card - 1x USB-C - 1x USB-A - 10Gbps per port - Expansion Card - USB 3.1 PCI-E Card -:108 mm
Depth
- U.2 (SFF-8643) to M.2 PCI Express:63 mm
- Discontinued and replaced by PEXUSB311AC3 - Dual Port USB 3.1 Card - 1x USB-C - 1x USB-A - 10Gbps per port - Expansion Card - USB 3.1 PCI-E Card -:122 mm

Side by side

Differences highlightedShow differences only

Comparison of M2E4SFF8643, PEXUSB311AC2
35 specifications	A StarTech.com U.2 (SFF-8643) to M.2 PCI Express Model M2E4SFF8643 View product	B StarTech.com Discontinued and replaced by PEXUSB311AC3 - Dual Port USB 3.1 Card - 1x USB-C - 1x USB-A - 10Gbps per port - Expansion Card - USB 3.1 PCI-E Card - Model PEXUSB311AC2 View product
Ports & interfaces2 differ
Host interfaceDiffers	M.2	PCIe
Output interfaceDiffers	U.2	USB 3.2 Gen 1 (3.1 Gen 1)
Expansion card standardKnown for one	Unknown — not stated by the source	PCIe 3.0
USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantityKnown for one	Unknown — not stated by the source	1
USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantityKnown for one	Unknown — not stated by the source	1
Design1 differ
Internal	Yes	Yes
Product colourDiffers	Red	Black
Certification	CE, FCC, REACH	CE, FCC, REACH
Featuresidentical
ChipsetKnown for one	Unknown — not stated by the source	ASMedia - ASM2142
Data transfer rate (max)Known for one	Unknown — not stated by the source	10 Gbit/s
UASP supportKnown for one	Unknown — not stated by the source	Yes
Plug and PlayKnown for one	Yes	Unknown — not stated by the source
Operational conditions3 differ
Operating temperature (T-T)Differs	0 - 55 °C	5 - 50 °C
Storage temperature (T-T)Differs	-40 - 85 °C	-20 - 60 °C
Operating relative humidity (H-H)Differs	15 - 90%	20 - 80%
System requirementsidentical
Windows operating systems supportedKnown for one	Unknown — not stated by the source	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 Pro, Windows 10 Pro x64, Windows 7 Enterprise, Windows 7 Enterprise x64, Windows 7 Home Basic, Windows 7 Home Basic x64, Windows 7 H
Linux operating systems supportedKnown for one	Unknown — not stated by the source	Yes
Server operating systems supportedKnown for one	Unknown — not stated by the source	Windows Server 2008 R2, Windows Server 2012, Windows Server 2016, Windows Server 2019
Technical detailsidentical
Compliance certificates	RoHS	RoHS
Weight & dimensions4 differ
WidthDiffers	21 mm	108 mm
DepthDiffers	63 mm	122 mm
HeightDiffers	15 mm	21 mm
WeightDiffers	8 g	50 g
Packaging data3 differ
Mounting brackets includedKnown for one	Unknown — not stated by the source	Yes
Quick installation guideKnown for one	Unknown — not stated by the source	Yes
Package widthDiffers	170 mm	142 mm
Package depthDiffers	142 mm	170 mm
Package height	30 mm	30 mm
Package weightDiffers	74 g	120 g
User guideKnown for one	Yes	Unknown — not stated by the source
Logistics dataidentical
Harmonized System (HS) code	84733020	84733020
Products per master (outer) caseKnown for one	Unknown — not stated by the source	80 pc(s)
Master (outer) case widthKnown for one	Unknown — not stated by the source	355 mm
Master (outer) case lengthKnown for one	Unknown — not stated by the source	590 mm
Master (outer) case heightKnown for one	Unknown — not stated by the source	310 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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