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
Global Trade Identification Number

⚡10 Gbps per port blazing speed

🔌4 SFP+ ports for max connectivity

🖥️PCIe 3.0 x8 interface for seamless integration

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Description

🚀 Quad-port 10G speed that future-proofs your data center hustle

BLAZING 10 GBPS SPEED - Experience ultra-fast data transfers with 10 Gigabit Ethernet per port, perfect for demanding virtualization and SAN workloads.
QUAD PORT POWERHOUSE - Four open SFP+ slots let you build fault-tolerant, high-bandwidth networks that keep your mission-critical systems online.
FLEXIBLE FIBER COMPATIBILITY - Supports both multimode and single-mode fiber with MSA-compliant modules or DAC cables, giving you ultimate network customization.
PLUG PLAY WITH LEADING SERVERS - Tested and verified on Dell PowerEdge, HPE ProLiant, and Lenovo ThinkSystem for hassle-free deployment and broad OS compatibility.
ENTERPRISE GRADE INTEL XL 710 CHIPSET - Leverage advanced features like VT-c virtualization, PXE boot, and jumbo frame support for next-level server performance.

The StarTech.com Quad Port 10G SFP+ Network Card (PEX10GSFP4I) is a high-performance PCIe 3.0 x8 adapter featuring four open SFP+ ports, each delivering 10 Gbps speeds. Powered by the Intel XL710 chipset, it supports multimode and single-mode fiber, jumbo frames up to 9K, and advanced virtualization technologies. Compatible with major server brands and multiple OS platforms, it offers scalable, fault-tolerant connectivity ideal for data centers and enterprise environments, backed by a 2-year warranty and lifetime support.

Specifications

ASIN	B07235332V
Best Sellers Rank	#488 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

Reviews

H**F

Five Stars

very very good

6.06.2016

A**Y

Four Stars

Works out of the box on FreeBSD as an X520-SR2 clone without the hassle of the intel-only transceivers

6.01.2016

A**H

Works great in my Dell R810 which I used for my ESXi 6.7 server. I bought the transcievers from fs.com (Intelt type).

16.11.2021

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