User Guide

• Secure Digital High-Capacity (SDHC) USH-1 card
Attention:
• Before handling the microSD card, touch a metal table or a grounded metal object. Otherwise the card
might get damaged by the static electricity from your body.
• During the data transfer, do not put your computer into sleep mode; otherwise, your data could get
damaged.
Replace or install a microSD card:
Note: Depending on the model, your nano-SIM-card and microSD-card tray might look slightly different
from the illustrations in this topic.
1. Insert a straightened paper clip into the hole in the tray. The tray ejects. Then, slide the tray out of the
computer. If a microSD card is installed, gently take the microSD card out of the tray.
2. Ensure that the new microSD card is installed in correct orientation. Install a new microSD card into the
tray with the metal contacts facing downward. Insert the tray into the nano-SIM card and microSD card
slot until you hear a click.
Use a smart card
If your computer has a smart-card slot, read the following information.
Supported smart card
Supported smart card specifications: 85.60 mm (3.37 inches) x 53.98 mm (2.13 inches)
Attention: Smart cards with slits are not supported. Do not insert such a smart card into the smart-card
reader of your computer. Otherwise the reader might get damaged.
30 T490s and X390 User Guide