Viewing profile — kohlschuetter

You can also use a BananaPi BPI-R3 for reprogramming. And you can “upgrade“ 10 Gbit/s DACs to 25 Gb/s. Details here https://kohlschuetter.github.io/blog/posts/2026/03/22/unlock...

Many 10GbE DACs can be hacked to run 25GbE, which is something I had to figure out after realizing that it’s not just plug and play as it was with twisted pair cables coming from 1…

Thank you! I had to stop digging at some point, but honestly I can't wait for someone to port Doom to a ONU.

Thank you! I hope you all have trusted vendors, and no-one gets bent over by the sudden flood of cheap SFP28 cables :-)

I was going from SFP+ to SFP28. Not sure about SFP to SFP28. But with that EEPROM change you could also try going from SFP to SFP+, just use different bandwidth values. You could a…

Thanks! AUI: So that's what that port next to the BNC connector on the 3COM 3C509B was for! We've come a long way.

Very timely post! How does this compare to https://github.com/tianocore/edk2-libc and https://libc.llvm.org/uefi/index.html , for example?

The new low-power Realtek chipsets will definitely push 10 GbE forward because the chipset won't be much more expensive to integrate and run than the 2.5Gbps packages. It all comes…

For reference, I'm seeing pings from my Mac to my Linux boxes (Lenovo Tiny5) at well under 1ms, not much worse than between them directly. But yeah, your mileage may vary.

I got me one of these adapters (RTL8127AF TXA403, with SFP+ cage); I haven't properly benchmarked it yet. There's no driver support on macOS, and for Linux you'd need a bleeding ed…

Be sure to test this adapter on iPad Pro, just for kicks (yes it works!) Although I managed to panic the kernel a couple of times without the extra heatsinks on...

This 100GbE card is an OCP 2.0 type 2 adapter, which will _probably_ not work with the PX PCB since that NIC has two of these mezzanine connectors, and PX only one. What also may n…

Very nice tip, thank you! I measure around +11W idle. While running a speed test, I read ca. +15W.

Thank you! I think, tragically, the blog post has caused this price increase. The offers on Amazon are most likely all drop shippers trying to gauge a price that works for them. Yo…

Disconnected as in "network"? What PCIe card do you use? Can you update the firmware (maybe from Windows)? Also check the BIOS settings (try setting TB security to "No Security" or…

Thanks! Have you tried the boltctl/rescan setup I mentioned in the post? It should get you going, as long as your Thunderbolt/USB4 setup is correct. If you're using an adapter card…

My optical transceiver gets to around 52 °C (measured via IR camera), well below its design limit, so that's not bad. If truly concerned, one could use SFP28 to SFP28 cage adapters…

It also works on iPad Pro :)

The limitation is Thunderbolt (32 Gbps theoretical limit for PCIe 3 tunneling).

My goal was to get a fanless setup (for a quiet office). If that's not a requirement just get the Raiden Digit Light One, which does have a fan (and otherwise the same network card…

Yes! However, I got around 15 Gbps with a Thunderbolt-only setup (TB3/TB4) = only 75% of the Ethernet setup. You'd also mostly be limited to short cables (1-2m) and a ring topology…