Question about new Mac

[420benz]

This Computer doesn’t have any USB ports. So i added a USB c Hub but i am not using the Apple mouse or keyboard so that took up two USB ports.My question [is this computer only compatible with an Apple mouse and keyboard ?]
Both logitech mouse and keyboard are working but the mouse is not working properly. The cursor and the scroll wheel is very erratic.

 

[BeatCrazy]

You can use any mouse/keyboard. Does that Logitech mouse require a separate USB dongle? You can adjust the mouse settings in System Preferences.

 

[420benz]

Yes Do you think i should replace the mouse ?

 

[BeatCrazy]

Yes Do you think i should replace the mouse ?

Hard to say what is causing the problem. Could be radio interference, bad mouse, bad battery, etc.

 

[zarmanto]

The cursor scrolling erratically could be caused by that desk of yours; it has a very irregular pattern. Try putting the mouse on a solid color surface and see what happens.

Of course, it could also be caused by a weak battery or a weak connection to the dongle, as BeatCrazy noted.

 

[svenmany]

I have the MX Master 3 and I have to keep the dongle very close to the mouse if I don't want it to get erratic. I'm always surprise by how the slightest obstruction or distance interferes with reception.

 

[Fishrrman]

OP:
"This Computer doesn’t have any USB ports."

No, that's completely wrong.
You can see them right in the picture.
TWO USBc ports (good for USB4 or thunderbolt)

This is what you need for the mouse:

Cable Matters 5Gbps USB C to USB 3.0 Adapter - 6 Inches, USBC Male to USBA Female OTG Adapter, Black

The Cable Matters USB 3.1 Type-C to Type-A adapter provides a convenient connection between the newest devices with USB Type-C and legacy USB peripherals with Type A. It adapts the Type-C port on a computer to connect all legacy equipment, peripherals, cables, hubs and chargers that ...

www.amazon.com

(buy 2 and keep the spare handy)

Now, plug the "unifying receiver" for the Logitech mouse into the adapter cable.
Plug the adapter cable into the back of the iMac.
Just let the dongle "hang free" -- you want it "pointing toward" the mouse.

Reboot and try again.

I recommend that you DO NOT USE the Logitech software app for the mouse.
INSTEAD, use "Steermouse":

SteerMouse

plentycom.jp

Much better!

(I've been using Logitech mice for going on 20 years. I would NEVER use an Apple mouse again, after getting used the Logitech -- far SUPERIOR devices!)

 

[svenmany]

OP:
"This Computer doesn’t have any USB ports."

No, that's completely wrong.
You can see them right in the picture.
TWO USBc ports (good for USB4 or thunderbolt)

This is what you need for the mouse:

Cable Matters 5Gbps USB C to USB 3.0 Adapter - 6 Inches, USBC Male to USBA Female OTG Adapter, Black

The Cable Matters USB 3.1 Type-C to Type-A adapter provides a convenient connection between the newest devices with USB Type-C and legacy USB peripherals with Type A. It adapts the Type-C port on a computer to connect all legacy equipment, peripherals, cables, hubs and chargers that ...

www.amazon.com

(buy 2 and keep the spare handy)

Now, plug the "unifying receiver" for the Logitech mouse into the adapter cable.
Plug the adapter cable into the back of the iMac.
Just let the dongle "hang free" -- you want it "pointing toward" the mouse.

Reboot and try again.

I recommend that you DO NOT USE the Logitech software app for the mouse.
INSTEAD, use "Steermouse":

SteerMouse

plentycom.jp

Much better!

(I've been using Logitech mice for going on 20 years. I would NEVER use an Apple mouse again, after getting used the Logitech -- far SUPERIOR devices!)

The OP used the term "USB" to mean "USB-A". So, except for the ambiguity, they weren't wrong.

The OP doesn't need the cables you recommend since they already bought a hub that does the same thing; providing the USB-A ports that are missing on the computer.

 

[Fishrrman]

sven:
"The OP doesn't need the cables you recommend since they already bought a hub that does the same thing; providing the USB-A ports that are missing on the computer."

The OP is using a Logitech wireless mouse.
He didn't say whether he's using the Logitech "unifying receiver" (it's a USBa dongle) or is connecting through bluetooth.
I'll assume he has the unifying receiver plugged into a hub.
I will guess that this arrangement is causing problems between the mouse, the receiver, and the Mac.

That's why I recommend plugging the UR -directly into- the back of the Mac, using the dongle adapter.

 

[svenmany]

sven:
"The OP doesn't need the cables you recommend since they already bought a hub that does the same thing; providing the USB-A ports that are missing on the computer."

The OP is using a Logitech wireless mouse.
He didn't say whether he's using the Logitech "unifying receiver" (it's a USBa dongle) or is connecting through bluetooth.
I'll assume he has the unifying receiver plugged into a hub.
I will guess that this arrangement is causing problems between the mouse, the receiver, and the Mac.

That's why I recommend plugging the UR -directly into- the back of the Mac, using the dongle adapter.

I just assumed the dongle they showed plugged into the hub was the unifying receiver. It is labelled "Logitech".

But, I do suppose there's a chance they are having a problem with the hub. My receiver is plugged into an old monitor's hub, which is plugged into a CalDigit hub, which is plugged into my computer. I have no issues. If I plug the dongle directly into my computer that places it further away from the mouse; that causes the jitters. But my success with my daisy chained hubs has no bearing on whether there's something wrong with their hub. I just wish they didn't have to buy something to test that.

 

[zarmanto]

He didn't say whether he's using the Logitech "unifying receiver" (it's a USBa dongle) or is connecting through bluetooth. ...

While he technically didn't reference USB-A, he did reference a hub and he posted images which depict two USB-A dongles plugged into that hub. Seems like a reasonable guess that those dongles are for his keyboard and his mouse.

 

[dwig]

There are a number of possible causes and it is a bit trial-and-terror sorting out the cause. The mouse should work properly.

The 2.4Ghz dongles, like Logitech's and almost everyone else's, can suffer from "radio" interference when connected to USB3 ports, especially if there is any activity in a neighboring port at USB3 speeds. This can cause erratic mouse behavior. When this is the case, placing the dongle at the end of a USB extension cable can cure the problem.

 

[zarmanto]

The 2.4Ghz dongles, like Logitech's and almost everyone else's, can suffer from "radio" interference when connected to USB3 ports, especially if there is any activity in a neighboring port at USB3 speeds.

So what I would take from that, is that one initial step in debugging could possibly be to just unplug the keyboard's dongle, and test to see if the mouse works better.