Jump to content

10.13 USB ports. Are we stuck with max 15 ports?


7 posts in this topic

Recommended Posts

Hello. 

 

I need to know if we are stuck with max 15 ports. 

My mobo has 13 physical ports. 6 of those are USB 3.0. Since USB 3.0 reads 2.0 I get 12 possibilities.   Ex: SSP1 - HS01,  SSP2 - HS02.

See them all if I enable the "disable port limit". 

Did the SSDT thing. 

Disable the "disable port limit" kext patch and I'm down to 15 ports. 

 

Also in System information all ports show up under USB 3.0 Bus.  Cosmetic? Can it be fixed? 

 

Thank you. 

            <dict>
                <key>Comment</key>
                <string>USB 3.0 limit 15 to 24 devices High Sierra 10.13.6</string>
                <key>Disabled</key>
                <false/>
                <key>Find</key>
                <data>
                g32IDw+DpwQAAA==
                </data>
                <key>MatchOS</key>
                <string>10.13.6</string>
                <key>Name</key>
                <string>com.apple.driver.usb.AppleUSBXHCI</string>
                <key>Replace</key>
                <data>
                g32ID5CQkJCQkA==
                </data>
            </dict>

 

  • Slice pinned this topic
  • 1 month later...

you can only have a maximum of 15 ports using the usbinjectall + a correct SSDT
anything over 15 ports you will have to sacrifice unless you want to continue to use disable port limit patch (not recommended)

  • 1 year later...

I read somewhere that each one USB 3 or 3.1 port are counted as two ports out of the 15 ports, is this true or did I misread??

 

Quote

you can only have a maximum of 15 ports using the usbinjectall + a correct SSDT
anything over 15 ports you will have to sacrifice unless you want to continue to use disable port limit patch (not recommended)

 

Are you sure??  Some conflicting answers here, & why is it not recommended to use disable port limit patch ?? Can you be more specific please?

 

Thanx,

Ash.

Edited by HashAsh
  • 6 months later...
On 11/4/2019 at 4:43 AM, HashAsh said:

I read somewhere that each one USB 3 or 3.1 port are counted as two ports out of the 15 ports, is this true or did I misread??

 

 

Are you sure??  Some conflicting answers here, & why is it not recommended to use disable port limit patch ?? Can you be more specific please?

 

Thanx,

Ash.


It's true; if you plug a USB2 device into a USB3 port it shows up as a different virtual port.

As for recommending against the port limit patch, I've been told some OS things are hard-coded to only expect 15 ports per controller and can end up reading memory they shouldn't if you have more.

×
×
  • Create New...