16 Port USB to RS-232 422/485 Metal Serial Adapter DIN-Rail Mount - Coolgear
Industrial USB 2.0 Hub, 4-Port | Black Box
CG Labs 4 Port USB 3.2 Gen 1 Hub w/ ESD Surge Protection & Port Status LEDs - Coolgear
Amazon.com: 4-Port USB 3.0 Portable Desk Hub,Fixable USB Data Hub 3.0 with 3.3ft/100CM Cable for MacBook, Mac Pro/Mini, iMac, XPS, Surface Pro, Notebook PC, USB Flash Drives, Mobile HDD,Computer and More :
har-port Service Port, Service Interface Service Port | Service Interface| Ethernet, USB, Video, Audio | HARTING Technology Group