Tripp Lite
1111 W. 35th Street
Chicago, IL 60609
+1 (773) 869-1774
+1 (773) 869-1329

USB-A Port Blockers, Red, 10 Pack

Block empty USB ports to prevent accidental or unauthorized connection of devices that could upload malware or copy private data.
  • Port blockers help prevent unwanted thumb drives and other devices from connecting
  • Can only be locked and unlocked with Tripp Lite U2BLOCK-A-KEY (sold separately)
  • Compatible with all USB-A ports in computers, hubs and wall chargers

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Secure USB Port Blockers Protect Your Data Against Unauthorized Access
These port blockers are an easy way to prevent unapproved personnel from connecting an unwanted flash drive or other USB peripheral to a USB-A port. Use a Tripp Lite U2BLOCK-A-KEY security key (sold separately) to insert a blocker into the USB port and lock it into place. This will prevent any USB peripheral from infecting the device with malware or removing classified data. The key also removes the blocker just as easily and quickly as it installs the blocker. The U2BLOCK-A10-RD includes 10 red blockers, which can only be used with the key included with U2BLOCK-A-KEY.

Typical Applications

  • Protect USB device from damage or unauthorized access by blocking the port and preventing a peripheral from connecting

Package Includes

  • (10) Port blockers
  • Quick Start Guide

System Requirements

  • Security key included with Tripp Lite U2BLOCK-A-KEY
TAA compliant RoHS compliant


UPC Code037332253606
Product Length (in.)0.28
Product Length (cm.)0.713
Product Length (ft.)0.02339
Product Length (m.)0.00713
Material of ConstructionMetal, Stainless Steel, Nickel, Plastic
Unit Packaging TypePolybag
Operating Temperature Range-40 - 185 °F (-40 - 85 °C)
Storage Temperature Range-58 - 221 °F (-50 - 105 °C)
Operating Humidity Range0 - 95 % RH, Non-Condensing
Storage Humidity Range0 - 95 % RH, Non-Condensing
Side A - Connector 1USB A (MALE)
Side B - Connector 1USB A (MALE)
Connector PlatingNickel
Contact Plating  Nickel
CertificationsRoHS and REACH
Product Warranty Period (Worldwide)Lifetime limited warranty


USB Accessories

  Model Number Description
USB-A Port Blockers with Reusable Key, 4 Pack U2BLOCK-A-KEY U2BLOCK-A-KEY USB-A Port Blockers with Reusable Key, 4 Pack

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Mon - Fri 8 AM - 5:30 PM CST
+1 (773) 869-1774

Mon - Fri: 8 AM - 5:30 PM CST
+1 (773) 869-1234

Tripp Lite
1111 West 35th Street
Chicago, Illinois 60609
United States

+1 (773) 869-1111 Main
1 773.869.1329 Fax

Business Hours
8 AM - 5:30 PM CST

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Need help with your purchase?
We're always available to help with questions, including product selection, sizing, installation and product customization. Call us at +1 (773) 869-1774 or email