Most Acer laptop models come with an SD memory card slot and a PC card slot. The memory card is removable storage media used for file storage in portable devices. Cameras, video cameras, mobile phones and other consumer devices also use SD cards for storage. PC card slots come in two different varieties on Acer laptops. The older version is called PCMCIA or Cardbus, while the newer version is an Expresscard. This slot allows you to add upgrades to the laptop, such as a wireless network card or sound card, without physically opening the laptop to install a device. Writer Bio
