1. 8 large high-capacity solid capacitors to ensure stable power supply in and out. 2. Made of thickened and hardened PC with high temperature and lead-free SMT, durable to use. 3. Comes with 4 15-pin power supply cables, each with a length of 60 cm, saving time and effort (SATA 15-pin standard power supply cable). 4. Full black switch, PCB, frame for better use. 5. Easily control 4 hard drives - Can be cascaded and can be stacked to control more hard drive box devices, such as fans, etc. Features: 8 large high-capacity solid capacitors to ensure stable power supply in and out. Made of thickened and hardened PC with high temperature and lead-free SMT, durable to use. Comes with 4 15-pin power supply cables, each with a length of 60 cm, saving time and effort (SATA 15-pin standard power supply cable). Full black switch, PCB, frame for better use. Easily control 4 hard drives - Can be cascaded and can be stacked to control more hard drive box devices, such as fans, etc. Specification: Type: HDD Power Supply Switch Weight: Approx. 190g Size: Approx. 12 * 7.3 * 2.1 cm Power cable length: approx. 60 cm / 23.6 inches Package list: 1 * HDD Power Supply Switch 4 * SATA cables 4 * Cable ties 1 * Screw Note: Please allow a small error due to manual measurement. Thank you for your kind understanding.