Antaira offers industrial USB hubs for expansion with locking features to securely increase the number of available USB ports for a variety of applications.
Industrial 4-Port USB2.0 Hub, Metal Case, w/ Locking Feature
Industrial 4-Port USB3.0 Hub, Metal Case, with Locking Feature
Industrial 7-Port USB Hub, Metal Case, with Locking Feature. Supports USB 1.1 and 2.0