Would this work with a crossover cable, so you can avoid the (ridiculous) expense of a 10G switch if you wanted to connect only two PCs together?

The TP-Link TL-SX105 5-port 10Ggps is available now in late 2021 at a not quite so ridiculous expense of $320.

Will i get 10g speed over pcie 2.0?

PCIe1 is 250MB/sec per lane, PCIe2 is 500MB/sec per lane, PCIe3 is 800MB/sec per lane. So an x4 PCIe2 slot has..... 2Gb/sec transfer capability. 10gbe is 1.2Gb/sec transfer speeds, which falls nicely within a PCIe x4 slot. If you're computer can drive data that quickly is another question. A single consumer SATA SSD can only do 400-500MB/sec , and SATA3 can only do 600MB maximum, which is under the speed of the 10gbe. So unless you have a RAID setup with SSDs, you cannot exceed the ethernet connection. Or, a nice NVMe m.2 drive can do 3600MB/sec easily, which will hurt the 10gbe connection.

can this work as a 10gigabit connection in between 2 systems if both have one of these like from a file server to a workstation pc

Yes. That's exactly how I'm using a pair of them, between a Linux file server and desktop. I manually configured IP addresses and routes.

Is this card low profile? does it come with the low profile bracket?

The card comes with a standard size bracket but a low profile bracket is in the box.

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ASUS XG-C100C 10G Network Adapter PCI-E x4 Card with Single RJ-45 Port and Built-in QoS for use with Windows 10/8.1/8/7 and Linux Kernel 4.4/4.2/3.6/3.2 (XG-C100C)

ASUS XG-C100C 10G Network Adapter PCI-E x4 Card with Single RJ-45 Port and Built-in QoS for use with Windows 10/8.1/8/7 and Linux Kernel 4.4/4.2/3.6/3.2 (XG-C100C)

Product ID: 250051572

Details

Brand
ASUS
Colour
red grey
Compatible devices
Desktop Laptop
Hardware interface
Ethernet
Product dimensions
12L x 8.5W x

⚡10Gbps blazing speed

🎯Built-in QoS prioritization

🔄Full backward compatibility

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Description

⚡ Upgrade to 10G: Because your network deserves to keep up with your ambition.

BLAZING 10 GBPS SPEED - Experience data transfers up to 10X faster than standard Gigabit Ethernet—perfect for bandwidth-heavy workflows.
SMART TRAFFIC MANAGEMENT - Built-in Quality of Service (QoS) lets you prioritize critical data streams for uninterrupted productivity and streaming.
CROSS PLATFORM POWERHOUSE - Native support for Windows 7 through 10 and multiple Linux kernels means flexible deployment across your devices.
PLUG PLAY RJ 45 UPGRADE - Easily transform your desktop with a standard copper cable—no need for expensive fiber optics or adapters.
SEAMLESS BACKWARD COMPATIBILITY - Supports 10/5/2.5/1Gbps and 100Mbps networks, ensuring smooth integration with your existing infrastructure.

The ASUS XG-C100C is a PCI-E x4 network adapter delivering ultra-fast 10Gbps Ethernet speeds with full backward compatibility and built-in QoS. Compatible with Windows and Linux, it upgrades desktops using standard RJ-45 copper cables, ideal for professionals demanding lightning-fast, reliable network performance.

Specifications

ASIN	B072N84DG6
Best Sellers Rank	#61,304 in Computers ( See Top 100 in Computers ) #152 in Network Cards
Brand	ASUS
Built-In Media	Quick start guide, Warranty card, XG-C100C 10G PCI_E Network Adapter, support CD (user manual and ultility)
Color	red, grey
Compatible Devices	Desktop, Laptop
Compatible Operating System Family	Windows
Customer Reviews	4.2 4.2 out of 5 stars (707)
Data Link Protocol	Gigabit Ethernet
Data Transfer Rate	10000 Megabits Per Second
EU Spare Part Availability Duration	3 Years
Global Trade Identification Number	00889349620045, 04712900620078
Hardware Interface	Ethernet
Item Dimensions L x W x H	12L x 8.5W x 2.1H centimeters
Item Type Name	ASUS XG-C100C 10G Network Adapter PCI-E x4 Card with Single RJ-45 Port (XG-C100C)
Item Weight	0.2 Pounds
Manufacturer	ASUS Computer International Direct
Mfr Part Number	XG-C100C
Minimum Required Operating System Version	Windows 7
Model Number	XG-C100C
UPC	889349620045 689341096318
Unit Count	1 Count

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Sold byAmazon PanamaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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