Unknown Internal connectors on Lenovo

[ruwen]

I have an Lenovo M92 Tiny (3229), which I have been used as a media center in the living room.
Well, my SSD died and I open it up for the first time, to replace the SSD.
The replacement was simple. but I found out that the mobo had a few other internal connectors and a mini pci-e port.

So I search around google to find out what those connectors are for.
And I ended up with a Lenovo page "Locating parts on the system board - ThinkCentre M92, M92p and M82 (Tiny Form Factor)".
Which do have a diagram for most of the connectors, except for four.

This is a photo of my mobo, where I show the four connectors not mention on the diagram.

I have even tried to find a block or schematic diagram, to see if I could read on it that way.
But I found nothing, even found out my board has Lenovo IQ77T Ver:1.0 printed on it.

Maybe some of you can help me out.

 

[rocktalkrock]

Look closely at the motherboard for any labeling next to the connectors. The two you have highlighted in the middle are jumpers not connectors. The label next to them appears to say J1 and J4.

 

[R0GG]

- 2 Pin red connector is J4 Default serial boot ROM (SBR)Reserved for Lenovo debug.

-2 pin black connector is J17 ?
- lengthy black connector with 9 pin next to the battery?
-White connector is Power switch Board cable connector?

Usually these connectors codes are normalized within brand/product line

 

[ruwen]

- 2 Pin red connector is J4 Default serial boot ROM (SBR)Reserved for Lenovo debug.

-2 pin black connector is J17 ?
- lengthy black connector with 9 pin next to the battery?
-White connector is Power switch Board cable connector?

Usually these connectors codes are normalized within brand/product line

The black 9pin is actually an 11 pin. and right next to it, sits a 3 pin with a label CLEAR CMOS. if you look closely at the battery you can actually see it left to the 11 pins.

And the power switch board is actually connected to the place in the middle of the red and black 2 pin zoom circles. So unless it has additional power connector which is funny, becouse all other IQ77T ver:1.0 pictures of the motherboard I can find on Google does not have that white connector on them.

 

[R0GG]

- 2 Pin red connector is J4 Default serial boot ROM (SBR)Reserved for Lenovo debug.

-2 pin black connector is J17 ?
- lengthy black connector with 9 pin next to the battery?
-White connector is Power switch Board cable connector?

Usually these connectors codes are normalized within brand/product line

The black 9pin is actually an 11 pin. and right next to it, sits a 3 pin with a label CLEAR CMOS. if you look closely at the battery you can actually see it left to the 11 pins.

And the power switch board is actually connected to the place in the middle of the red and black 2 pin zoom circles. So unless it has additional power connector which is funny, becouse all other IQ77T ver:1.0 pictures of the motherboard I can find on Google does not have that white connector on them.

Yes I revised my post meanwhile as I figured that out after examining 3 boards on ebay and 3 videos on youtube lol
Your best bet is to compare with Lenovo laptops of same generation that have a detailed maintenance manual available, if you could find just one it would probably clarify all the extra connectors and jumpers. I checked couple manuals but they were all very schematic and have many models grouped in the same manual, so no details.

 

[ruwen]

- 2 Pin red connector is J4 Default serial boot ROM (SBR)Reserved for Lenovo debug.

-2 pin black connector is J17 ?
- lengthy black connector with 9 pin next to the battery?
-White connector is Power switch Board cable connector?

Usually these connectors codes are normalized within brand/product line

The black 9pin is actually an 11 pin. and right next to it, sits a 3 pin with a label CLEAR CMOS. if you look closely at the battery you can actually see it left to the 11 pins.

And the power switch board is actually connected to the place in the middle of the red and black 2 pin zoom circles. So unless it has additional power connector which is funny, becouse all other IQ77T ver:1.0 pictures of the motherboard I can find on Google does not have that white connector on them.

Yes I revised my post meanwhile as I figured that out after examining 3 boards on ebay and 3 videos on youtube lol
Your best bet is to compare with Lenovo laptops of same generation that have a detailed maintenance manual available, if you could find just one it would probably clarify all the extra connectors and jumpers. I checked couple manuals but they were all very schematic and have many models grouped in the same manual, so no details.

I had a coworker who said the 11pin might be a TPM connector. and in the manuael i can find ref to a TPM 1.2 security chip. So that might be the case. But I can not find any TPM 1.2 chip with only 11 pin to verify it.

 

[Dragos Manea]

Honestly, most of this connectors you dont need to know what they do,why do you need to check the TPM chip if the notebook works well? Dont mess with it, you might screw something really bad. I say this because you dont seem to know much about electronics and circuits.