What is the *total* USB3 and USB 2 bandwidth across the non-Thunderbolt USB ports on a Mac Studio Max?
Breaking in my Mac Studio Max, trying to decide which USB device goes where, and trying to interpret the System Report which looks something like:
I'm not sure how to interpret the bandwidth and latency implications of this... system report on my 2017 iMac shows one "USB 3.1 Bus" (for all the TB ports - of course, only 1 TB controller on Intel) and one "USB 3.0 bus" (for all the type A ports) but there is no mention of hubs.
Does this mean that all the USB3 devices connecting to the front Type C ports or rear Type A ports are sharing the bandwidth of a single port?
Even though most of the devices I want to connect are only USB 2, the way USB 2/3 works means that multiple USB2 devices plugged into a regular USB3 hub still only get to share one USB 2 port's worth of bandwidth (480Mbps - not the full 5Gbps of USB3) between them - plus the latency implications of using a hub. Many devices recommend not using a hub (although whether that is just to avoid troubleshooting people's dodgy hubs I don't know).
2 of my devices are audio interfaces so I've got those going in to the two TB4 ports so they get their own controllers, the other two TB4 ports are used by DisplayPort displays.
Hopefully, I'm over-thinking things and there won't be any real problems - even the audio interfaces use a lot less than the full USB2 bandwidth, so it comes down to whether there are latency issues or if any devices are precious about being attached via hubs.
However, it might be an issue if anybody wants to load up their Studio with faster USB3 devices....
Has anybody actually done any bandwidth testing of this and/or investigated how USB bandwidth/latency works in things like the Caldigit Elements hub which provide more TB4 sockets...?
Breaking in my Mac Studio Max, trying to decide which USB device goes where, and trying to interpret the System Report which looks something like:
> USB 3.1 Bus
[Any USB devices connected to TB4 port 1]
> USB 3.1 Bus
[Any USB devices connected to TB4 port 2]
> USB 3.1 Bus
[Any USB devices connected to TB4 port 3]
> USB 3.1 Bus
[Any USB devices connected to TB4 port 4]
> USB 3.1 Bus
> USB2 Hub [Manufacturer: Apple]
[Any USB2 devices connected to USB A or C ports]
> USB3 Gen 2 hub [Manufacturer: Apple]
[Any USB3 devices connected to USB A or C ports]
I'm not sure how to interpret the bandwidth and latency implications of this... system report on my 2017 iMac shows one "USB 3.1 Bus" (for all the TB ports - of course, only 1 TB controller on Intel) and one "USB 3.0 bus" (for all the type A ports) but there is no mention of hubs.
Does this mean that all the USB3 devices connecting to the front Type C ports or rear Type A ports are sharing the bandwidth of a single port?
Even though most of the devices I want to connect are only USB 2, the way USB 2/3 works means that multiple USB2 devices plugged into a regular USB3 hub still only get to share one USB 2 port's worth of bandwidth (480Mbps - not the full 5Gbps of USB3) between them - plus the latency implications of using a hub. Many devices recommend not using a hub (although whether that is just to avoid troubleshooting people's dodgy hubs I don't know).
2 of my devices are audio interfaces so I've got those going in to the two TB4 ports so they get their own controllers, the other two TB4 ports are used by DisplayPort displays.
Hopefully, I'm over-thinking things and there won't be any real problems - even the audio interfaces use a lot less than the full USB2 bandwidth, so it comes down to whether there are latency issues or if any devices are precious about being attached via hubs.
However, it might be an issue if anybody wants to load up their Studio with faster USB3 devices....
Has anybody actually done any bandwidth testing of this and/or investigated how USB bandwidth/latency works in things like the Caldigit Elements hub which provide more TB4 sockets...?
