Sony VAIO VGN-TZ100 Series User Manual page 62

IRX-3960_END
Except IRX-3960_BGN
!
Insert the ExpressCard slot protector to protect against debris entering the slot when not using an ExpressCard module. Before moving your computer,
be sure to insert the ExpressCard slot protector into the slot.
Except IRX-3960_END
If the module or adapter does not go into the slot easily, remove it gently and verify you are inserting it in the proper direction.
Make sure you use the most recent software driver provided by the ExpressCard module manufacturer.
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Using Your VAIO Computer