Lenovo ThinkPad T490 Hardware Maintenance Manual page 60

Table 10. System board connector and cable guide (continued)
Item
Connector (location)
5
LCD connector (internal)
6
USB-C connecor (external)
7
Wireless-WAN card slot (internal)
8
Thunderbolt 3 connector (USB-C)
(external)
9
Docking-station connector
(external)
10
M.2 solid-state drive connector
(internal)
11
USB 3.1 connector Gen 1
(external)
12
HDMI connector (external)
13
Audio connector (external)
14
Coin-cell battery connector
(internal)
15
NFC connector (internal)
16
Hall sensor board connector
(internal)
17
Built-in battery connector (internal)
18
Trackpad connector (internal)
19
Fingerprint reader card connector
(internal)
20
Memory module slot (internal)
21
Smart card reader connector
(internal)
54
T490 Hardware Maintenance Manual
Internal cable required
LCD cable
No
No
No
No
No
No
No
No
Coin-cell battery cable
NFC cable
Hall sensor board cable
Built-in battery cable
Trackpad cable
Fingerprint reader cable
No
Smart card reader cable
Cable connection
Connect one end of the LCD cable
to the LCD panel and the other end
to this connector.
Connect USB-C compatible
devices or a USB-C power adapter
to this connector.
Insert the wireless-WAN card into
this slot.
Connect a USB-C compatible
device or a Thunderbolt 3
compatible device to this
connector.
Connect a supported docking
station to your computer through
this connector.
Insert the M.2 solid-state drive into
this slot.
Connect USB-compatible devices
to this connector.
Connect a compatible digital audio
device or video monitor to this
connector.
Connect headphones or a headset
with 3.5-mm (0.14-inch) 4-pole
plug to this connector.
The coin-cell battery comes with
the cable. Connect the cable to
this connector.
Connect one end of the cable to
the NFC module and the other end
to this connector.
The hall sensor board comes with
the cable. Connect the cable to
this connector.
The built-in battery comes with
cable. Connect the cable to this
connector.
Connect one end of the cable to
the trackpad and the other end to
this connector.
Connect one end of the cable to
the fingerprint reader card and the
other end to this connector.
Insert the memory module into this
slot.
Connect one end of the cable to
the smart card reader and the
other end to this connector.