Lenovo ThinkPad Hardware Maintenance Manual page 56

System board and keyboard subcard connectors (type A）
No.
Connector/feature
1 13
Thermal fan connectors (internal)
2
LCD cable connector (internal)
3
dc-in connector (internal)
4
HDMI connector (external)
5
Audio connector (external)
6 22
Keyboard subcard cable
connectors (internal)
7
Speaker connector (internal)
8
Coin-cell battery connector
(internal)
9
M.2 solid-state drive slots (internal)
50
P1 Gen 4 and X1 Extreme Gen 4 Hardware Maintenance Manual
Internal cable required
Thermal fan assembly cable
LCD cable
dc-in cable
No
No
Keyboard assembly cables
Speaker assembly cable
Coin-cell battery cable
No
Cable connection
The thermal fan assembly come
with two cables. Connect one
cables to this connector.
Connect one end to the LCD panel
and the other end to this
connector.
Connect the dc-in cable to this
connector.
Connect a compatible digital audio
device or video monitor to this
connector.
Connect headphones or a headset
to this connector.
Connect the keyboard subcard
cables to these connectors.
Connect the speaker assembly
cable to this connector.
The coin-cell battery comes with a
cable. Connect the cable to this
connector.
Insert M.2 solid-state drives
directly into these slots.