4 Black Bullet camera+DVR+1TB Hard Drive Package Details: 1 x 8CH DVR with 1TB hard drive 4 x 2MP Bullet Camera 1 x USB Mouse 4 x 60ft BNC Cable for Cameras 1 x 1 To 4 Power Splitter 2 x 12V 2A Power Adapter 4 x Mounting Screw set | 8 Black Bullet camera+DVR+1TB Hard Drive Package Details: 1 x 8CH DVR with 1TB hard drive 8 x 2MP Bullet Camera 1 x USB Mouse 8 x 60ft BNC Cable for Cameras 2 x 1 To 4 Power Splitter 3 x 12V 2A Power Adapter 8 x Mounting Screw set |