Lenovo 21D8 Hardware Maintenance Manual page 63

Table 9. System board connector and cable guide (continued)
No.
Connector/feature
6
EDP connector (internal)
7
DC-IN connector (external)
8
USB-C (Thunderbolt 4) connector
(external)
9
Smart card reader connector
(internal)
10
M.2 solid-state drive connector
(internal)
11
Trackpad connector (internal)
12
Built-in battery connector (internal)
13
Fingerprint reader connector
(internal)
14
Coin-cell battery connector
(internal)
15
Audio connector (external)
16
SD-card connector (external)
17
HDMI connector (external)
18
USB 3.2 connector Gen 1 (external)
19
Always On USB 3.2 connector Gen
1 board connector (external)
20
Ethernet connector (external)
21
Nano-SIM-card slot (external)
22
Keyboard connectors (internal)
23
Internal cable required
EDP cable
DC-IN cable
No
Smart card reader cable
No
Trackpad cable
Built-in battery cable
Fingerprint reader cable
Coin-cell battery cable
No
No
No
No
No
Ethernet cable
No
Keyboard assembly cables
Cable connection
Connect one end of the EDP cable
to the LCD panel and the other end
to this connector.
Connect the DC-IN cable to this
connector.
Connect a USB-C compatible
device or a Thunderbolt 4
compatible device to this
connector.
Connect one end of the cable to
the smart card reader and the other
end to this connector.
Insert the M.2 solid-state drive into
this slot.
Connect one end of the cable to
the trackpad and the other end to
this connector.
The built-in battery comes with a
cable. Connect the cable to this
connector.
Connect one end of the cable to
the fingerprint reader and the other
end to this connector.
The coin-cell battery comes with a
cable. Connect the cable to this
connector.
Connect headphones or a headset
with 3.5-mm (0.14-inch) 4-pole
plug to this connector.
Insert the SD card into this
connector.
Connect a compatible digital audio
device or video monitor to this
connector.
Connect USB-compatible devices
to this connector.
Connect USB-compatible devices
to this connector.
Connect one end of the Ethernet
cable to the Ethernet board and the
other end to this connector.
Install a nano-SIM card into the
nano-SIM card tray. Then, insert
the tray with the card into this slot.
The keyboard assembly comes
with the cables. Connect the
cables to these connectors.
.
Chapter 7 Locations
57