Borg Probe
From Star Trek : Freedom's Wiki
The Borg Probe was a type of small starship used by the Borg, apparently to scout low-resistance targets. The craft is not as well armed as most larger Borg ships, and is only about 350 meters long. These ships are equipped with transwarp coils. The probe was equally matched by a Starfleet Intrepid Class in terms of firepower and was shaped as spearhead (or longigated cubicle similar to the standard photon torbedo).
The USS Voyager encountered a Borg probe in mid-2375. The crew attempted to disable it by beaming a photon torpedo aboard, but it detonated near the power matrix and destroyed the ship. (VOY: "Dark Frontier")
