Features: This 4 port USB printer Switcher features channel intelligent switching with <50ms latency, utilizing FSW7227 analog Switcher chips for lossless routing, systems through physical buttons or Scroll Engineered with industrial grade TVS diode arrays providing ±15kV ，it ensures safe opor USB2.0 full devices including printers, scanners, and class keyboards/ without driver installation. Ideal for IT administrators and multi device in healthcare/financial sectors requiring secure management across 4 computers simultaneously. Perfect for office workstations, data centers, and medical facilities needing USB device sharing with 5 meter extended transmission via shielded cables and rebuilding technology. The energy efficient aluminum delivers 5V/500mA Freestanding port power with <1.5W consumption, maintaining integrity through 1.2dB insertion loss at 480MHz frequency. Specifications: Size: 11.4x7.4x2.9cm Substance: ABS Metal Four-port USB printing switcher Package Includes: Four-port USB2.0 printing switcher ×1 note: Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!