Industrial-Grade USB Hubs - Industrial USB-to-Serial Converters/USB Hubs

USB-to-Serial Converters - Industrial USB-to-Serial Converters

7 Port USB 3.0 Metal Hub - from LINDY UK

USB 3.0 4 Port Industrial Metal Hub w/15KV ESD Protection

USB Hubs USB to Serial Converter - Dynalog India

USB-to-Serial Converters/USB Hubs - Industrial Edge Connectivity

StarTech.com 4 Port USB to Serial RS232 Adapter - Wall Mount - Din Rail - COM Port Retention - FTDI USB to DB9 RS232 Hub (ICUSB2324I) : Electronics

StarTech.com 8 Port Serial Hub USB to RS232/RS485/RS422 Adapter - Industrial USB 2.0 to DB9 Serial Converter Hub - IP30 Rated - Din Rail Mountable Metal Serial Hub - 15kV ESD

StarTech.com USB to RS232/RS485/RS422 8 Port Serial Hub Adapter - Indu – Tekmentum

USB 2.0 to 8-Port RS422 / 485 DB9 Serial Converter Hub, FTDI Chipset - SY-HUB15052

USB to 232 485 422 Industrial Grade Serial Converter 2 Port RS485 To USB Lightning Protection

UT-861A USB to 4-port 485/422 converter industrial grade photoelectric RS485 hub

Raspberry Pi - Industrial Grade Multifunctional USB HUB, Extending 3x USB ports + 100M Ethernet Port