Is there a way to determine what specific physical USB port a device is connected to in macOS?
I have a Nexus 7 tablet attached to a Mac Mini, and I need to figure out what port it is connected to. I am managing someone else’s code, in which they litearally define the port:
/dev/tty.usbserial-A20e1sNr
This port has now changed, and there seem to be about 20 different USB devices hooked up to this computer. Is there a way to figure out what specific port corresponds to the USB port the Nexus 7 tablet is connected to?
macos usb
edited Jun 11 '18 at 0:15
JakeGould
31k1093137
migrated from serverfault.com Jun 28 '13 at 3:11
This question came from our site for system and network administrators.
add a comment |
I have a Nexus 7 tablet attached to a Mac Mini, and I need to figure out what port it is connected to. I am managing someone else’s code, in which they litearally define the port:
/dev/tty.usbserial-A20e1sNr
This port has now changed, and there seem to be about 20 different USB devices hooked up to this computer. Is there a way to figure out what specific port corresponds to the USB port the Nexus 7 tablet is connected to?
macos usb
edited Jun 11 '18 at 0:15
JakeGould
31k1093137
migrated from serverfault.com Jun 28 '13 at 3:11
This question came from our site for system and network administrators.
add a comment |
I have a Nexus 7 tablet attached to a Mac Mini, and I need to figure out what port it is connected to. I am managing someone else’s code, in which they litearally define the port:
/dev/tty.usbserial-A20e1sNr
This port has now changed, and there seem to be about 20 different USB devices hooked up to this computer. Is there a way to figure out what specific port corresponds to the USB port the Nexus 7 tablet is connected to?
macos usb
edited Jun 11 '18 at 0:15
JakeGould
31k1093137
I have a Nexus 7 tablet attached to a Mac Mini, and I need to figure out what port it is connected to. I am managing someone else’s code, in which they litearally define the port:
/dev/tty.usbserial-A20e1sNr
This port has now changed, and there seem to be about 20 different USB devices hooked up to this computer. Is there a way to figure out what specific port corresponds to the USB port the Nexus 7 tablet is connected to?
macos usb
macos usb
edited Jun 11 '18 at 0:15
JakeGould
31k1093137
edited Jun 11 '18 at 0:15
JakeGould
31k1093137
edited Jun 11 '18 at 0:15
JakeGould
31k1093137
edited Jun 11 '18 at 0:15
JakeGould
31k1093137
edited Jun 11 '18 at 0:15
JakeGould
31k1093137
31k1093137
asked Jun 27 '13 at 15:52
jojo
migrated from serverfault.com Jun 28 '13 at 3:11
This question came from our site for system and network administrators.
migrated from serverfault.com Jun 28 '13 at 3:11
This question came from our site for system and network administrators.
add a comment |
add a comment |
2 Answers
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/dev/tty.usbserial is USB to serial connection, so other USB devices doesn't show up here. I would recommend listing all usb.serial devices using:
ls -la /dev/tty.usbserial*
If there is more than one, disconnect Nexus tablet and list USB connected devices again and check which one disappeared.
edited Jun 11 '18 at 0:16
JakeGould
31k1093137
answered Jun 28 '13 at 13:53
BobC
1462
add a comment |
Partial answer:
You can use ioreg -p IOUSB to see the USB tree is it is registered with the IOKit (or use the System Information app, under Hardware/USB).
Additionally, ioreg -l -p IOUSB prints properties, among these USB Address (which seems to be the port number of the parent hub), and locationID, which according to the docs is a
32 bit number which is unique among all USB devices in the system, and which will not change on a system reboot unless the topology of the bus itself changes.
The value returned by IORegistryEntryGetLocationInPlane, which is displayed after the @ in the ioreg output, also seems to contain some sort of port path, or at least a unique identifier.
I don't have USB serial devices to play around with here, so I don't know how this information is related to the identifier after tty.usbserial, or if you can obtain this identifier with iokit in another way.
answered Dec 18 '18 at 6:57
dirkt
9,04231121
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2 Answers
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2 Answers
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/dev/tty.usbserial is USB to serial connection, so other USB devices doesn't show up here. I would recommend listing all usb.serial devices using:
ls -la /dev/tty.usbserial*
If there is more than one, disconnect Nexus tablet and list USB connected devices again and check which one disappeared.
edited Jun 11 '18 at 0:16
JakeGould
31k1093137
answered Jun 28 '13 at 13:53
BobC
1462
add a comment |
/dev/tty.usbserial is USB to serial connection, so other USB devices doesn't show up here. I would recommend listing all usb.serial devices using:
ls -la /dev/tty.usbserial*
If there is more than one, disconnect Nexus tablet and list USB connected devices again and check which one disappeared.
edited Jun 11 '18 at 0:16
JakeGould
31k1093137
answered Jun 28 '13 at 13:53
BobC
1462
add a comment |
/dev/tty.usbserial is USB to serial connection, so other USB devices doesn't show up here. I would recommend listing all usb.serial devices using:
ls -la /dev/tty.usbserial*
If there is more than one, disconnect Nexus tablet and list USB connected devices again and check which one disappeared.
edited Jun 11 '18 at 0:16
JakeGould
31k1093137
answered Jun 28 '13 at 13:53
BobC
1462
/dev/tty.usbserial is USB to serial connection, so other USB devices doesn't show up here. I would recommend listing all usb.serial devices using:
ls -la /dev/tty.usbserial*
If there is more than one, disconnect Nexus tablet and list USB connected devices again and check which one disappeared.
edited Jun 11 '18 at 0:16
JakeGould
31k1093137
answered Jun 28 '13 at 13:53
BobC
1462
edited Jun 11 '18 at 0:16
JakeGould
31k1093137
edited Jun 11 '18 at 0:16
JakeGould
31k1093137
edited Jun 11 '18 at 0:16
JakeGould
31k1093137
31k1093137
answered Jun 28 '13 at 13:53
BobC
1462
answered Jun 28 '13 at 13:53
BobC
1462
answered Jun 28 '13 at 13:53
BobC
1462
1462
add a comment |
add a comment |
Partial answer:
You can use ioreg -p IOUSB to see the USB tree is it is registered with the IOKit (or use the System Information app, under Hardware/USB).
Additionally, ioreg -l -p IOUSB prints properties, among these USB Address (which seems to be the port number of the parent hub), and locationID, which according to the docs is a
32 bit number which is unique among all USB devices in the system, and which will not change on a system reboot unless the topology of the bus itself changes.
The value returned by IORegistryEntryGetLocationInPlane, which is displayed after the @ in the ioreg output, also seems to contain some sort of port path, or at least a unique identifier.
I don't have USB serial devices to play around with here, so I don't know how this information is related to the identifier after tty.usbserial, or if you can obtain this identifier with iokit in another way.
answered Dec 18 '18 at 6:57
dirkt
9,04231121
add a comment |
Partial answer:
You can use ioreg -p IOUSB to see the USB tree is it is registered with the IOKit (or use the System Information app, under Hardware/USB).
Additionally, ioreg -l -p IOUSB prints properties, among these USB Address (which seems to be the port number of the parent hub), and locationID, which according to the docs is a
32 bit number which is unique among all USB devices in the system, and which will not change on a system reboot unless the topology of the bus itself changes.
The value returned by IORegistryEntryGetLocationInPlane, which is displayed after the @ in the ioreg output, also seems to contain some sort of port path, or at least a unique identifier.
I don't have USB serial devices to play around with here, so I don't know how this information is related to the identifier after tty.usbserial, or if you can obtain this identifier with iokit in another way.
answered Dec 18 '18 at 6:57
dirkt
9,04231121
add a comment |
Partial answer:
You can use ioreg -p IOUSB to see the USB tree is it is registered with the IOKit (or use the System Information app, under Hardware/USB).
Additionally, ioreg -l -p IOUSB prints properties, among these USB Address (which seems to be the port number of the parent hub), and locationID, which according to the docs is a
32 bit number which is unique among all USB devices in the system, and which will not change on a system reboot unless the topology of the bus itself changes.
The value returned by IORegistryEntryGetLocationInPlane, which is displayed after the @ in the ioreg output, also seems to contain some sort of port path, or at least a unique identifier.
I don't have USB serial devices to play around with here, so I don't know how this information is related to the identifier after tty.usbserial, or if you can obtain this identifier with iokit in another way.
answered Dec 18 '18 at 6:57
dirkt
9,04231121
Partial answer:
You can use ioreg -p IOUSB to see the USB tree is it is registered with the IOKit (or use the System Information app, under Hardware/USB).
Additionally, ioreg -l -p IOUSB prints properties, among these USB Address (which seems to be the port number of the parent hub), and locationID, which according to the docs is a
32 bit number which is unique among all USB devices in the system, and which will not change on a system reboot unless the topology of the bus itself changes.
The value returned by IORegistryEntryGetLocationInPlane, which is displayed after the @ in the ioreg output, also seems to contain some sort of port path, or at least a unique identifier.
I don't have USB serial devices to play around with here, so I don't know how this information is related to the identifier after tty.usbserial, or if you can obtain this identifier with iokit in another way.
answered Dec 18 '18 at 6:57
dirkt
9,04231121
answered Dec 18 '18 at 6:57
dirkt
9,04231121
answered Dec 18 '18 at 6:57
dirkt
9,04231121
answered Dec 18 '18 at 6:57
dirkt
9,04231121
9,04231121
add a comment |
add a comment |
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