1 x Coded Key(49mm/1.92inch)Package contains:Length*Width*Height: 13*10*5.6mm/0.51*0.39*0.22 inchThe product is simply locked and still requires care to protect the information. If you have any questions, please contact me in time, I will be happy to help you solve them.When installing, take out the optical port lock, align it with the optical port of the device and push it in gently; when you hear a "click", it means that the optical port lock has locked the device interface; use the disassembly tool (Coded Keys) to align with the disassembly hole, and rotate it 90 , just pull it straight out.The USB port blocker can be used in a variety of equipment and place, and is suitable for optical fiber switches, routers, industrial computers, computers and other devices with USB optical ports. The product is a blocking cap with special insertion key made of PC material, which can protect open network ports and easily prevent users from connecting cables, devices or inserting foreign objects without permit.10 x USB Port Blocker (Material: PC)Color: BlackOur products can protect data . The elastic buckle design can effectively lock the USB optical port; at the same time, the removal tool does not distinguish between the front and the back, which can reduce operating errors; it is small and portable, can be put into your bag or pocket, and meets all your IT needs. Dustproof, moistureproof, waterproof and anti-oxidation.