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New 10 GbE USB adapters are cooler, smaller, cheaper

jeffgeerling.com

21–30 of 384 posts

Re: New 10 GbE USB adapters are cooler, smaller, cheaper

#21
post #7

Earlier quoted context omitted.

Conversely, the last time I checked a couple of weeks ago, it was impossible to find any USB4 external SSDs on Amazon; only USB 3.2.

Wouldn't it be better to just buy an M.2 NVMe adapter, eg. ICY DOCK ICYNano MB861U31-1M2B[0]? [0]: https://global.icydock.com/product_247.html

That doesn't seem to be USB 4?

Re: New 10 GbE USB adapters are cooler, smaller, cheaper

#23
post #16

Earlier quoted context omitted.

The problem with fibre isn't the sensitivity. It's that most endpoints have a 1Gbps copper port on them and then Cat6A ports can be used with the common devices but also allow you to add or relocate 10Gbps devices without rewiring the building again.

However — unlike copper twisted pair — the bandwidth current fiber media can carry is nearly limited by nothing but the optics at each end.

That doesn't solve the chicken and egg problem.

What probably would is something like having PCIe and USB to 1Gbps fiber adapters that cost $5.

Re: New 10 GbE USB adapters are cooler, smaller, cheaper

#25
post #15
post #10

Earlier quoted context omitted.

Theoretically yes, practically that hasn't been built yet. I've only seen it for 2.5Gbase-T, and only for 802.3bt Type 3 (51W). If anyone's aware of something better, I'd be interested too :) (Then again I wouldn't voluntarily use 5Gb-T or 10Gb-T anyway, and ≈50W is enough for most use cases.) [ed.: https://www.aliexpress.us/item/3256807960919319.html ("2.5GPD2CBT-20V" variant) - actually 2.5G not 1G as I wrote initi…

Eh. A lot of laptops won't accept less than 60w My work laptop won't accept less than 90w (A modern HP, i7 155h with a random low end GPU) At first everyone at the office just assumed that the USB C wasn't able to charge the pc

Great. So we got EU laws to mandate USB-C chargers and then get manufacturers that flaunt the spirit of the law by rejecting lower wattages.

Re: New 10 GbE USB adapters are cooler, smaller, cheaper

#26
post #9

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.

I think class 4 tops out at about 71W delivered to the powered device, albeit 90W at the switch port.

Might be a struggle I suspect!

Re: New 10 GbE USB adapters are cooler, smaller, cheaper

#28
post #11

Too bad this is 10Gbase-T, that energy-wasting hot-running garbage needs to die sooner rather than later. Good thing the ranges for 25Gbase-T are short enough to make it impractical for home use. (Fibre is nowhere near as "sensitive" as some people believe.)

Is the energy consumption inherent to 10Gbase-T? Or is it that 1Gbit nics have been around forever and optimised ad infinitum?

To be fair, the power consumption is also my biggest gripe with my WiFi 6 AP, they run extremely hot.

Re: New 10 GbE USB adapters are cooler, smaller, cheaper

#29
post #11

Too bad this is 10Gbase-T, that energy-wasting hot-running garbage needs to die sooner rather than later. Good thing the ranges for 25Gbase-T are short enough to make it impractical for home use. (Fibre is nowhere near as "sensitive" as some people believe.)

Good thing the ranges for 25Gbase-T are short enough to make it impractical for home use.

Anyone who talks about 25GBASE-T like it actually exists, doesn't know anything about what they're talking about.

Re: New 10 GbE USB adapters are cooler, smaller, cheaper

#30
post #16
post #11

Too bad this is 10Gbase-T, that energy-wasting hot-running garbage needs to die sooner rather than later. Good thing the ranges for 25Gbase-T are short enough to make it impractical for home use. (Fibre is nowhere near as "sensitive" as some people believe.)

The problem with fibre isn't the sensitivity. It's that most endpoints have a 1Gbps copper port on them and then Cat6A ports can be used with the common devices but also allow you to add or relocate 10Gbps devices without rewiring the building again.

In practice though 10G via copper requires pretty perfect terminations. The slightest error leads to crosstalk issues.
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