Is it also possible to power a laptop through those adapters? PoE++ can deliver up to 100W of power, more than enough for most laptops.
We used PoE hats for a bunch of Raspberry Pis once. It’s definitely a great idea.
New 10 GbE USB adapters are cooler, smaller, cheaper
71–80 of 384 posts
Re: New 10 GbE USB adapters are cooler, smaller, cheaper
#72Re: New 10 GbE USB adapters are cooler, smaller, cheaper
#73Earlier quoted context omitted.
That link notes: "Card supports 10Gbit/s and 10/100/1000/2500/5000/10000Mbit/s Ethernet" Nice to see; some NICs are shedding 10/100 support. Apparently, it's not necessary to do this, even in a low cost device.
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We have switches now, hubs just don't exist anymore. Switches are not affected by some devices having a lower speed.
Re: New 10 GbE USB adapters are cooler, smaller, cheaper
#74All these USB version names. I used to know what they all meant, but then the USB IF went ahead and renamed them all and made a bunch of versions have the same name and renamed some versions to have the same name as the old name of other versions. I have absolutely no idea what anyone means when they say USB 3.2 gen 2x2. I used to know what USB 3.2 meant but it's certainly not that.
To be fair they seem to have taken this often-stated criticism on board. USB 4's naming is more sensible, and they've pushed the simple data speed & power labelling that makes it easier to work out what you need.
I don't think they've taken the criticism on board, USB 3 still has the completely nonsensical names
Re: New 10 GbE USB adapters are cooler, smaller, cheaper
#75Earlier quoted context omitted.
That link notes: "Card supports 10Gbit/s and 10/100/1000/2500/5000/10000Mbit/s Ethernet" Nice to see; some NICs are shedding 10/100 support. Apparently, it's not necessary to do this, even in a low cost device.
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Isn’t that only relevant for network topologies that rely heavily on broadcasting to multiple nodes. Eg token ring, WiFi and powerline adapters?
For regular Ethernet, the switch will have a table of which IPs are on which NIC and thus can dynamically send packets at the right transmission protocols supported by those NICs without degrading the service of other NICs.
Re: New 10 GbE USB adapters are cooler, smaller, cheaper
#76All these USB version names. I used to know what they all meant, but then the USB IF went ahead and renamed them all and made a bunch of versions have the same name and renamed some versions to have the same name as the old name of other versions. I have absolutely no idea what anyone means when they say USB 3.2 gen 2x2. I used to know what USB 3.2 meant but it's certainly not that.
[flagged]
It means that if I pick up a random USB cable and plug it into a USB port I have no idea how well it will work or even if it will work at all. It's like the U in USB stands for Unpredictable.
Re: New 10 GbE USB adapters are cooler, smaller, cheaper
#77Earlier quoted context omitted.
The issue might not be the wattage bit rather the minimum voltage. (Some?) Macs seems to charge at 15v already, most laptops need 20v
Coincidentally, the USB-C spec is written such that wattage implies a minimum set of supported voltages: * ≤15W charger: must have 5V * ≤27W charger: must have 5V & 9V * ≤45W charger: must have 5V & 9V & 15V * (OT but worth noting: >60W: requires "chipped" cable.) * ≤100W charger: must have 5V & 9V & 15V & 20V (levels above this starting to become relevant for the new 240W stuff) (36W/12V doesn't exist anymore in PD…
My laptop has
$ upower -i $(upower -e | grep BAT)
[...]
voltage-min-design: 11.58 V
I guess that would be out of spec then?
edit: nvm I didn't see the qualifier 'minimum'
Re: New 10 GbE USB adapters are cooler, smaller, cheaper
#78Is it also possible to power a laptop through those adapters? PoE++ can deliver up to 100W of power, more than enough for most laptops.
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Re: New 10 GbE USB adapters are cooler, smaller, cheaper
#79Earlier quoted context omitted.
That link notes: "Card supports 10Gbit/s and 10/100/1000/2500/5000/10000Mbit/s Ethernet" Nice to see; some NICs are shedding 10/100 support. Apparently, it's not necessary to do this, even in a low cost device.
100 mode saved me once when I really really really needed to have a connection in that moment, but the ethernet cable glued to the wall that I was using had only three out of eight wires even functioning.
Don’t we need at least four for 100 Mbps?
Re: New 10 GbE USB adapters are cooler, smaller, cheaper
#80Earlier quoted context omitted.
That hasn’t been my experience. I once tried to charge an M3 MBP via a lower powered wall plug. It was left off over night and the following morning the battery was still at 1%.
Note: Some devices expect USB-A on the charger side instead of C USB-A pump out 1A5V(5W) regardless of what's connected to it, then it negotiate higher power if available. USB C-C does not give any power if the receiving device is not able to negotiate it
This was a decent USB plug from Anker. I regularly use it to charge things like iPhones and tablets. I knew it wouldn’t supply enough power to run the MBP but thought it should trickle charge the device over night. But it didn’t.
I can’t recall which cable I used though. The cable might have been garbage but I’m pretty sure I threw out all the older USB cables so they wouldn’t get mixed with more modern supporting cables.