Thursday, July 4, 2024

kvm – Is it doable to share a twin monitor USB C Hub with two M2 Macbooks Professionals?

questioning whether it is doable to attach it with a female-female USB C thingy

It could be doable however NOT RECOMMENDED.

Within the USB-C spec they lay out how the cables and adapters are to work, and specify that something deviating from this spec can introduce hazards. A part of the explanation they do not enable the adapters proven within the spec is as a result of there’s issues on indicating the aptitude of the cables and gadgets when such an adapter is within the chain.

The USB-C spec requires cables, gadgets, and adapters to point it is capabilities to the host by the use of a resistor community or a small built-in circuit. This means the protocols supported (similar to within the case of a video adapter) or what’s a protected voltage and present (similar to with an influence provide). There are USB-C hubs that can have feminine USB-C ports and permit connecting a video adapter to a MacBook however in addition they have a bunch of electronics in them to guarantee that there is not any try and put a 5 volt 3 amp cable with an influence provide that’s supplying 48 volts at 5 amps. If the consumer of such an adapter is conscious of how the foundations work and why they’re in place, and follows them with out fail, then it will be doable to make use of such an adapter safely. Break the foundations as soon as, and within the improper method, then it may destroy a really costly MacBook.

The difficulty of shorting out some USB-C gadgets is however one concern, and given the harm it may do the far bigger concern. The opposite concern is that I recall that MacOS would not help two unbiased shows from a single USB-C port.

Be aware that I specified unbiased shows. A typical results of utilizing twin show adapters with Mac computer systems is that each shows present the identical picture. For some individuals that is the specified operate. My guess is that the specified operate is to get an prolonged desktop, and Apple doesn’t help this.

Be aware that I specified Apple doesn’t help this. I’ve seen with those that put in Home windows or Linux on Intel/Apple computer systems that they might get two unbiased shows working from a single USB-C port, and it’s pretty trivial to seek out examples. Additionally doable is utilizing some non-Apple drivers inside Mac OS to realize this operate, however discovering examples of that might be tougher to seek out since an replace to the OS usually breaks this operate so searches for any experiences of success are typically misplaced within the experiences of failures.

I’ve seen that folks acquired Linux to run on the Apple silicon Macs so I suppose it’s doable to run Linux to get the twin show mode to work, after which run a digital machine on Linux for operating MacOS. That is an concerned course of, and sure fairly fragile given how new this software program is correct now.

This does not imply it’s unimaginable to attach two unbiased shows to 2 Macs by a KVM. What it means is connecting the KVM to the Macs by two (or possibly three) USB-C cables, and sure some form of dock or adapter to the KVM swap. There may be fairly a dialogue on learn how to finest join the shows and KVM however the fundamentals is fairly trivial and easy, select an acceptable KVM swap then get the suitable cables to make the connections to the MacBooks. What is suitable relies on the precise capabilities of the MacBooks, the capabilities of the shows, and the way the person who has to fund this needs to stability price to comfort.

In the event you completely, positively, will need to have a single USB-C cable to every MacBook for energy, USB, and two unbiased shows, then that’s probably doable. Making that work although will not be one thing Apple helps and so can be removed from trivial.

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