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)

I installed this on my unraid server to obviously get 10gbps connectivity, hooked it up to an unmanaged 10gbps switch, alongside my desktop so I could move files between it and my NAS at approx 1.25 gigabytes a second (10,000 / 8). Common misconception is that you need cat 6a or at least cat 6 to transfer at those speeds. I'm using a 50 foot cat 5e cable and it works just fine. As long as the distance isn't too much, cat 5e is able to do high speeds.I was running out of pcie slots on my server motherboard so I got an m.2 to pcie slot adapter. Aside from needing to take off the bracket of the NIC, it works perfectly since m.2 is 4 pcie lanes just like this card. Haven't had any issues with this.Only thing I would recommend considering before buying, is that RJ-45 uses more power than SFP+ so if you're just starting to build out your multi gig network, consider looking into fiber too. You can get a lot of refurb or used SFP+ gear online for cheap, and it would probably save you some on your power bill. I sort of regret buying the 5 port 10gbps rj-45 switch I have. I love the speeds, but power is so expensive where I'm at that 24/7 powered stuff makes a difference.

I installed 3 of these. Of course this is just day one, but some of the negative reviews I read, don't apply at all (at least to me, on 3 different computers... one AMD 2 intel). Some of the reviews that say that this card doesn't initialize and you have to wait, or that it disconnects or drivers are horrible etc... this was a very clean plug and play. I downloaded the latest drivers from ASUS... but popped the cards in 2 windows 10 machines, and 1 windows 11 machine. On the 2 windows 10 machines (which are also intel), it tries to boot from the network card. I tried to disable this in the bios but it still tries, this is annoying because it takes like 30 extra seconds to boot. You can click ESC to skip it but if you have a monitor that doesn't show you what is going on you can assume something is wrong or stop it during boot. I need to figure out how to get it to skip this, I am sure there is a way. Full disclaimer still waiting on my other 10G switches, so I haven't tested them out at full speed yet, but on my1G network they work just perfect like the internal NICs always have.

I decided to upgrade my home network, so I can access my NAS faster. Given that I had bought a new switch, this NIC card, and a new NAS, I couldn't easily troubleshoot why I wasn't getting the speed to the NAS or why the Internet was dropping. I ended up swapping out every new component, until I discovered that it was this card that was causing all the issues. Issue #1: I couldn't achieve the transfer speed using iPerf3 test. Issue #2: Internet connection was very slow, and Google Speed Test would not run. However, I was able to use the card to transfer files from my NAS to my PC at 1GB/s, which is very close to 10Gbps. If I needed this network card just for internal transfer, then I would've been ok. But, I also needed this card for my Internet access, and that's where it was a no-go for me. I switched out to Intel X550, and without changing anything else, my Internet connection is working fine. I had read some other comments stating that CAT 7 cables are causing problems, but I am only using CAT 6A cables to the Internet. I also upgraded the firmware to the latest, but it didn't help. I do wonder if the card is dropping IP addresses when the buffer is set 'incorrectly.' Either way, after having spent a lot of hours sweating over how to make this card work, I finally gave up and returned the product. Intel card is 3 times more expensive, but I am glad that it just works. I have an ASUS motherboard, which is working very well, so I am a bit disappointed by this experience.

Finally an affordable 10GbE card. I actually replaced a dual port Intel 10 GbE with this. The Intel card frequently overheated, while this one doesn't. No issues with Win10 or Linux support, and it's having no trouble hitting expected transfer rates.This card also supports 2.5/5 Gbit rates, as well as directly attaching to another 10GbE card. You don't need a 10GbE switch to use it. Also, if you're using CAT 5e/6, I strongly suggest at least CAT 6A. It is the same price but is more stable for higher bandwidth.[Edit - 2/2021 - Windows update]Aquantia was acquired by Marvell in 2019. ASUS does not appear to be keeping their Windows drivers up to date, so you should just get them directly from Marvell (search for AQC107 drivers on Marvell's site and you'll find both firmware and windows drivers). This can be applied to any AQC107 based NICs.[Edit - Linux info]For a bit of background, this card, as well as the Gigabyte GC-AQC107 (10GbE Network Adapter Pci-E X4 Card with RJ-45 Port) and manufacturer Aquantia AQtion 10G Pro NIC use the same Aquantia AQtion AQC107 chipset. The only mild difference between the cards is the size of the heatsink, so pick whatever looks like the best option. In Linux, the driver for this is called atlantic. This driver was added to the default Linux kernel as of version 4.11. That means that it is baked in to Ubuntu 18.04 and later.And for those wondering about sustained transfer rates/overheating, I've done iperf3 testing and am able to transfer at a continual average rate of 9.37 Gb/s for at least 10 minutes.$ iperf3 -c host -t 600Connecting to host giver, port 5201[ 4] local 192.168.3.244 port 33486 connected to 192.168.3.152 port 5201[ ID] Interval Transfer Bandwidth Retr Cwnd[ 4] 0.00-1.00 sec 1.09 GBytes 9.40 Gbits/sec 488 844 KBytes[ 4] 1.00-2.00 sec 1.09 GBytes 9.39 Gbits/sec 254 1000 KBytes...[ 4] 598.00-599.00 sec 1.09 GBytes 9.38 Gbits/sec 413 1.01 MBytes[ 4] 599.00-600.00 sec 1.09 GBytes 9.37 Gbits/sec 127 1.10 MBytes- - - - - - - - - - - - - - - - - - - - - - - - -[ ID] Interval Transfer Bandwidth Retr[ 4] 0.00-600.00 sec 655 GBytes 9.37 Gbits/sec 184641 sender[ 4] 0.00-600.00 sec 655 GBytes 9.37 Gbits/sec receiveriperf Done.