Features: USB Port Lock with Metal+PC Construction ensures secure, tool less installation and dustproof protections for all devices. Metal cores and scratch resistant PC housing provide tamper proof security while maintaining port accessibility for authorized users. Perfect for IT professional, corporate offices, and frequent travelers requiring reliabled data protections and port maintenance. Protect shared workstations in airports, working spaces, or educational institutions against unauthorized USB device connection. Blocks malware risks and accidental debris accumulation without compromising USB port functionality. Specifications: Product name: Removable USB port lock/USB sealer Component: PC+Metal Color: Black Function: protect equipment data security, dust proof Dimensions: Applicable to standard USB interfaces, the specific size meets the common standards of most computers and office equipment. Practicality: The detachable design is easy to install and disassemble, effectively preventing dust and foreign objects from entering the USB interfaces, and protecting the device port from damage. USB port lock size: about 12x10.2x4.5mm/4.72x0.4x0.18in Key size: about 54mm/2.13in Quantity: 2/5/10pcs USB Lock Package Includes: 1Pcs key 2/5/10pcs USB Port lock note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution. USB Port Lock with Metal+PC Construction ensures secure, tool less installation and dustproof protections for all devices. Metal cores and scratch resistant PC housing provide tamper proof security while maintaining port accessibility for authorized users. Perfect for IT professional, corporate offices, and frequent travelers requiring reliabled data protections and port maintenance. Protect shared workstations in airports, working spaces, or educational institutions against unauthorized USB device connection. Blocks malware risks and accidental debris accumulation without compromising USB port functionality.