StarTech.com USB to RS232/RS485/RS422 8 Port Serial Hub Adapter - Industrial Metal USB 2.0 to DB9 Serial Converter - Din Rail Mountable - Industrial 8 port serial hu
StarTech.com 4 Port USB 3.0 Hub - USB-A to USB-C & 3x USB-A SuperSpeed 5Gbps - Self or USB Bus Powered - USB 3.1 Gen 1 BC 1.2 Charging Hub - 4 Port USB 3.0 hub - USB
StarTech.com 8 Port USB to DB9 RS232 Serial Adapter Hub - Industrial DIN Rail and Wall Mountable - USB - 8 x Number of Serial Ports External - 1 x Number of USB Port