Rear view
Figure 8. ThinkPad X1 Carbon and ThinkPad X1 Yoga rear view
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Fan louvers
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Micro-SIM-card slot
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Fan louvers
The fan louvers and internal fan enable air to circulate in the computer to ensure proper cooling, especially
the cooling of the microprocessor.
Note: To ensure proper airflow, do not place any obstacles in front of the fan louvers.
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MicroSD card slot
Your computer is equipped with a micro secure digital (SD) card reader. Insert a microSD card into the
microSD card slot for data access or storage.
Note: Ensure that you use a microSD card. Do no use a standard-sized SD card. The standard-sized SD
card is not compatible.
For instructions on how to use the microSD card, see "Using the microSD card" on page 48.
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Micro-SIM-card slot
If your computer supports the wireless wide area network (WAN) feature, a micro Subscriber Identification
Module (SIM) card might be required to establish wireless-WAN connections. Depending on the country or
region of delivery, a micro SIM card might be already installed in the micro-SIM-card slot.
Note: Ensure that you use a micro SIM card. Do no use a standard-sized SIM card. The standard-sized
SIM card is not compatible.
To install or replace the micro SIM card, see "Installing or replacing the micro SIM card" on page 120.
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ThinkPad X1 Carbon and ThinkPad X1 Yoga User Guide
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MicroSD card slot