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Makes sense. I just meant standard conduit, Ethernet cable straight through the conduit. Not into the home network.
I’ve pulled connectors through odd gaps, I know how it is.
Data rates and cost:
2x Display connections = 40 gbs
2x USB 3.0 = 10 gbs
=> 50 gbs through a CAT 7 is difficult
OM4 fibre optic is dirt cheap (under $1/m) but the KVMs are expensive at $800.
Using optical thunderbolt cables is also very expensive with $700 for the cable and dock.
Again, I just mean literally running Ethernet cables into standard conduits, terminating them, and sticking a HDMI over Ethernet box on either side. In order not to modify the conduits. I don’t know what the bandwidth is for that kind of solution. I’m not presenting it as the only and best option.
Your solution is cool. My own conduits are surrounded on four sides by concrete, so pulling connectors through is something that I only have to do very very rarely. And more often than not I find myself having to change one thing to wireless or use something that can make use of multiplexing just so I can free up a bit of space in there to do something else.
My own network is still an absolutely atrocious 200kB/s DSL through decaying, water-damaged copper lines. And those aren’t going through conduits, those have had concrete poured right over them. Over the 2x1mm thick flat two-strand “cable” that was obsolete when the building was built decades ago. RJ11. Plastic sheath that disintegrates into asbestos or some shit when exposed to sunlight. I’m not describing an ideal data transmission environment here.
$300 per connection: 2 display connections and two USB connections would cost $1200.
https://www.bhphotovideo.com/c/product/1649024-REG/kanexpro_ext_50m18g_4k_18gbps_hdmi_over.html
https://www.avaccess.com/products/u3ex100-usb3-2-extender/
Does this answer your question?
My solution isn't cheap either: 10m USB-C 10gbit: 50€ each(b-stock/customer returns, normally expect to pay 100€), 15m DisplayPort & HDMI: 40€ each.
Total is approx. $200-2500 between cables and building materials.
Wireless HDMI is pretty interesting but low quality and high latency. The 60 GHz never took off and wouldn't work anyway as it can't pass through walls.
Wireless USB was a thing with USB 2.0 but it is dead. There was also some 60GHz USB for VR but that also failed in the market.
Ah, I’ve never looked into what hardware is actually available at the consumer level. That is a lot of money to move a video signal from one place to another.
FWIW I just looked at the AliExpress-tier options and they are much cheaper, but I don’t know about latency situation even if they do hit advertised bandwidth.
I didn’t even know HDMI cables went up to 15m for the copper version.
Those low cost Aliexpress hdmi over RJ45 are "last gen" HDMI limiting yourself to 4k@30Hz. This place already has CAT7 cabling so this would have been so much easier but sadly it isn't good enough and the current gen are to expensive.
They are fiber optic with copper for power supply and side channel. For some reason they are fairly affordable compared to OM3 fiber solutions. Probably due to them running multiple fibers allowing the transceiver to be slower and simpler. With OM4 cables there is only one fiber per direction. I think HDMI is 4 pairs so it is 5GB/s for 4 fiber compared to 20GB/s for the OM4 cable.
I personally hate copper cables. There are so many bad cables out there that it can be hard to find one that works reliably (2-5m range). Knowing now that you can buy 5m fiber optic for 30€ I probably will move forward only buying fiber optic and just coil up the excess length.