What kind of cable does this external hard drive use?

A USB 2.0 cable will work. However the drive is USB 3.0 capable and if your PC has a USB 3.0 port you will want a cable like the one you linked. A USB 3.0 cable would be required for USB 3.0 transfer speeds. Also a USB 3.0 cable is backward compatible with USB 2.0 ports, so getting the USB 3.0 cable even if your PC only supports USB 2.0 is future proofing.
 
USB 3.0 Micro-B connector
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The same as the USB 2.0 Micro-B with additional pins to support 3.0 specs, making the connector wider.
 
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