Sony VGN-SZ140 - Manual (Page 46)

46 n N
Using Your VAIO Computer
4 Carefully slide the ExpressCard/34 media (1) into the slot until it clicks in place.
Do not force it into the slot.
✍
If the media 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/34 media manufacturer.