Dell Inspiron 1526 (Late 2007) - Manual (Page 148)

146
Adding and Replacing Parts
Subscriber Identity Module (Optional)
Subscriber Identity Modules (SIM) identify users uniquely through an
International Mobile Subscriber Identity.
CAUTION:
Before you begin any of the procedures in this section, follow the
safety instructions in the Product Information Guide.
NOTE:
Only GSM (HSDPA) type cards need a SIM. EVDO cards do not use a SIM.
1 Follow the procedures in "Before You Begin" on page 133.
2 In the battery bay, slide the SIM into the compartment with the cut-off
corner of the card facing away from the compartment.
1 SIM 2 battery bay
1
2