Ejecting Memory Stick Pro Duo card out of notebook...

Question

I just got an Acer Aspire AS5720Z notebook.It has a 5-in-1 card reader in it.My memory Stick Pro Duo card is extremely small. The manual says the card reader will read it. There is NO eject button that I can see. I'm afraid to put the card in without knowing how to eject it.How do you EJECT the card from the card reader?Is there a software eject like on a MAC?Please advise.Thanks,David