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Cisco Integrated Services Router Hardware Installation Guide
Chapter 2 Installing the Router
Installing the Cisco 810 ISR
Figure 2-18 Accessing the SIM Cards
Step 4
To open the SIM socket cover, slide the cover in the direction of the open arrow. (See Figure 2-19.)
Figure 2-19 Opening the SIM Socket Cover
Step 5
Gently lift the cover on its hinges. (See Figure 2-20.)