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Inquiries regarding Lenovo OEM USB headers

Inquiries regarding Lenovo OEM USB headers

C
Cupcake_Rose
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844
09-11-2023, 01:25 AM
#1
Hello all! I have a Lenovo Something-centre PC and it has two regular usb headers and then one thats the exact same shape but cyan instead of black and labeled COM. All of these have an extra column of pins to the left which are shorted with the oem cables, but they dont have to be shorted to work (I plugged in a tp-link bluetooth card thing which doesnt have those pins and it worked fine)–what are these pins for? Also, what is the COM header??
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C
Cupcake_Rose
09-11-2023, 01:25 AM #1

Hello all! I have a Lenovo Something-centre PC and it has two regular usb headers and then one thats the exact same shape but cyan instead of black and labeled COM. All of these have an extra column of pins to the left which are shorted with the oem cables, but they dont have to be shorted to work (I plugged in a tp-link bluetooth card thing which doesnt have those pins and it worked fine)–what are these pins for? Also, what is the COM header??

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C
Crazy_Heaven
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811
09-11-2023, 11:33 PM
#2
I believe this forum message will address your queries about the Lenovo ThinkPad T400, T500 and newer models.
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C
Crazy_Heaven
09-11-2023, 11:33 PM #2

I believe this forum message will address your queries about the Lenovo ThinkPad T400, T500 and newer models.

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B
Bonnibel
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794
09-15-2023, 11:36 AM
#3
The discussion highlights two USB headers marked as 'USB' and another labeled 'COM'. This distinction may relate to different communication protocols or device roles within the system.
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B
Bonnibel
09-15-2023, 11:36 AM #3

The discussion highlights two USB headers marked as 'USB' and another labeled 'COM'. This distinction may relate to different communication protocols or device roles within the system.

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K
Kawaiichan1776
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216
09-15-2023, 07:45 PM
#4
that's a serial port, not a USB header.
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K
Kawaiichan1776
09-15-2023, 07:45 PM #4

that's a serial port, not a USB header.

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F
fifu92336
Junior Member
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32
09-16-2023, 03:48 PM
#5
Located the solution! Lenovo confirms its support for GPIO+GND sensing, which aligns with what I initially assumed. See their forum thread for details: https://forums.lenovo.com/t5/ThinkStatio...-p/5007104
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F
fifu92336
09-16-2023, 03:48 PM #5

Located the solution! Lenovo confirms its support for GPIO+GND sensing, which aligns with what I initially assumed. See their forum thread for details: https://forums.lenovo.com/t5/ThinkStatio...-p/5007104

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