this post was submitted on 16 Apr 2024
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Thought I was being clever... (lemmy.ca)
submitted 7 months ago* (last edited 7 months ago) by avidamoeba@lemmy.ca to c/framework@lemmy.ml
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...in using my Framework 2.5GbE cards to speed up a large data transfer to 2.5Gb. Got 0.28 instead. ๐Ÿคญ

These aren't the USB-A to USB-C adapters I was looking for. ๐Ÿ˜‚

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[โ€“] unexposedhazard@discuss.tchncs.de 28 points 7 months ago* (last edited 7 months ago) (2 children)

USB 3.1 is 10Gb/s so it should work but as you noted yourself, these adapters are in my experience often just USB 2.0

If it doesnt have the extra pins needed for USB 3.0 then its the adapters fault. https://en.wikipedia.org/wiki/USB#Connector_type_quick_reference

[โ€“] avidamoeba@lemmy.ca 2 points 7 months ago

I think I found one that has the pins. It's by OWC and I think they've "solved" the fact that it can be dangerous if the wrong thing plugs into it by permanently tethering it to their USB-C cable.

[โ€“] avidamoeba@lemmy.ca 1 points 7 months ago

Yup, that's my hypothesis as well!

[โ€“] rhandyrhoads@lemmy.world 17 points 7 months ago (3 children)

I've always fantasized about using a USB-A to A cable.

[โ€“] avidamoeba@lemmy.ca 8 points 7 months ago

I have one from a work piece of hardware which has a USB port that can operate in either device or host mode. ๐Ÿฅน

[โ€“] computergeek125@lemmy.world 1 points 7 months ago

Those absolutely exist, but it's typically from older or more niche hardware.

I will note that you can't (usually) plug two computers into each other using a type a to a cable because USB still has a concept of strict host/client. USB-OTG allowed some portable client devices to operate in host mode with a special adapter - typically smartphones to use keyboards and such. I believe the Pi4's USB power port is one such port.

Type C more frequently has devices that can regularly operate in both modes, so you can do something like plug your iPhone into your android with an adapter for data transfer. So, if you have two computers and one can operate it's type a port in client mode, you could absolutely run USB A to A for computer to computer data transfer.

(I did all that from memory while kind of tired so corrections welcome)

[โ€“] Arbiter@lemmy.world 1 points 7 months ago (1 children)

Get an older external hard drive, live the dream.

[โ€“] swab148@lemm.ee 2 points 7 months ago

I have one that actually takes USB-B, you'd better believe I'm not losing that cable lol

[โ€“] SomeBoyo@feddit.de 15 points 7 months ago

might have to convert to PS/2 for faster speeds

[โ€“] Anticorp@lemmy.world 2 points 7 months ago

Why do the usb-a connectors look like CAT5 connectors?

[โ€“] kewko@sh.itjust.works 2 points 7 months ago (1 children)

Probably just need to do the crossover ๐Ÿ˜„

[โ€“] SteveTech@programming.dev 3 points 7 months ago (1 children)

Nah, auto MDIX should've figured it out.

Also I'm not sure the 2.5G spec supports crossover cables anyway.

[โ€“] kewko@sh.itjust.works 4 points 7 months ago

It doesn't, I was only joking