Does this support full throughput for all 4 links simultaneously, i.e. 40gbps tx and 40gbps rx?

The maximum throughput of the PEX10GSFP4I is limited by the bus interface. PCI Express Gen 1.0 max throughput is 2Gbps per lane. PCI Express Gen 2.0 max throughput is 4Gbps per lane. PCI Express Gen 3.0 max throughput is 8Gbps per lane. The available bandwidth (64Gbps) is shared equally between the four ports. Atha, StarTech.com Support

Is the open sfp style sfp+? the title says sfp+, but that style isn't specific. there is a difference between them so it should be specified somewhere

The PEX10GSFP4I has 4 open SFP+ ports capable of 10Gbps speeds. Stefan, StarTech.com Support

Will cisco sfp-10gb-sr sfp's work in this nic?

Yes, we would expect those Cisco SFP modules to work. We’ve specifically tested the card with our version of a very similar SFP-10G-SR module (SFP10GSRST) Curtis, StarTech.com support

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Quad Port 10G SFP+ Network Card - Intel XL710 Open SFP+ Converged Adapter - PCIe 10 Gigabit Ethernet Server NIC - 10GbE Fiber Optic LAN Card - Dell PowerEdge HPE ProLiant (PEX10GSFP4I)

Product ID: 43385561

Details

Brand
StarTech.com
Color
Black
Compatible Devices
Desktop
Data Link Protocol
EEE 802.3ae x8
Data Transfer Rate
20000 Megabits
Hardware Interface
PCI Express x8

⚡10 Gbps per port blazing speed

🔌4 SFP+ ports for max connectivity

🖥️Intel XL710 chipset power

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Description

🚀 Upgrade your network, upgrade your edge.

BLAZING 10 GBPS SPEED - Experience ultra-fast data transfers with 10 Gigabit Ethernet on every port, perfect for demanding virtualized environments.
QUAD PORT POWERHOUSE - Four SFP+ slots deliver unmatched redundancy and bandwidth aggregation for mission-critical uptime.
ROCK SOLID COMPATIBILITY - Works flawlessly with top-tier servers like Dell PowerEdge, HPE ProLiant, and Lenovo ThinkSystem plus major OS and hypervisors.
UNIVERSAL FIBER FLEXIBILITY - Supports both multimode and single-mode fiber with MSA-compliant modules or DAC cables for seamless integration.
ENTERPRISE GRADE RELIABILITY - Backed by Spirent-verified performance, 9K jumbo frame support, and a 2-year warranty for peace of mind.

The StarTech.com Quad Port 10G SFP+ Network Card (PEX10GSFP4I) is a high-performance PCIe 3.0 x8 adapter featuring four open SFP+ ports powered by the Intel XL710 chipset. It supports 10 Gbps per port with both multimode and single-mode fiber compatibility, ideal for data centers and virtualization. Tested for reliability and compatible with leading servers and OS platforms, it offers advanced features like PXE boot, 9K jumbo frames, and link aggregation, all backed by a 2-year warranty.

Specifications

ASIN	B07235332V
Best Sellers Rank	#857 in Internal Computer Networking Cards
Brand	StarTech.com
Built-In Media	network card (1), quick-start guide (1)
Color	Black
Compatible Devices	Desktop
Customer Reviews	4.0 4.0 out of 5 stars (10)
Data Link Protocol	EEE 802.3ae (10GBASE-LR/SR only), PCI Express Rev 3.0, using PCIe x8 (or higher) slot
Data Transfer Rate	20000 Megabits Per Second
External Testing Certification	CE, FCC
Global Trade Identification Number	00065030867740
Hardware Interface	PCI Express x8
Item Dimensions L x W x H	5.5"L x 0.6"W x 3.9"H
Item Type Name	StarTech.com SFP+ Server Network Card - Intel XL710 Chip (PEX10GSFP4I)
Item Weight	0.28 Pounds
Manufacturer	Startech.com
Mfr Part Number	PEX10GSFP4I
Model Number	PEX10GSFP4I
UPC	065030867740
Unit Count	1.0 Count
Warranty Description	2 Year Warranty

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686782CFA

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In stock

Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Desertcart purchases this item on your behalf and handles shipping, customs, and support to Senegal.

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