Star Wars X-Wing (2nd Ed): Vulture-class Droid Fighter Expansion - Rules of Play says:

The Vulture-class Droid Fighter is the backbone of the Separatist Navy and emblematic of its strategy: weak in isolation, but overwhelming in numbers. A sufficiently vast swarm of networked attackers form a cunning, sinister intelligence that can defeat even wise and powerful Jedi pilots.

The Vulture-class Droid Fighter Expansion Pack contains everything you need to begin building your own squadron of linked droid starfighters—most importantly, a beautifully pre-painted Vulture-class droid fighter miniature. Additionally, five ship cards give you the ability to outfit your droid fighter with distinct types of programming while five upgrade cards provide even more freedom to shape your squadron.