Sony VAIO VGC-M1 Series Hardware Manual page 30

Hardware Guide
2
Push the memory stick in to release it, and then pull
it out.
✍
Always remove the Memory Stick gently, or it may pop out
unexpectedly.
You are recommended to remove the memory stick before shutting
down the computer.
If an error message appears when you remove it, insert the memory
stick into the slot again and press <Enter>. Wait until the active
application finishes, then remove the memory stick. If the message
confirms the ejection of the card, click OK.
Write-protecting Memory Sticks
Some Memory Sticks are designed with an erasure
prevention switch to protect valuable data from
accidental erasure or overwriting.
Move the tab horizontally or vertically to set or release
write-protection. When the erasure prevention switch is off, data can be saved on the Memory Stick. When the erasure prevention
switch is on, data can be read from but not saved on the Memory Stick.
LOCK
LOCK
✍
Some kinds of Memory Stick do not have a lock switch.
LOCK
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Using your VAIO computer