The ports determine the sorts of cables you can utilize, as well as what may be easily and quickly done by connecting them in. What’s the big deal with a slew of connection ports, exactly? There’s a lot to it. On Monday, Apple gave fans of its old MacBook Pro a pleasant surprise at its October launch event: the return of several long-missing connectivity ports, including the MagSafe charger (no, not like on the iPhone), as well as an SD card slot and an HDMI port.