Urs104A RS485 Hub, 1 Channel Input, 4 Channels Output. Half-Duplex, One Way Communication, Designed for The PTZ Control on CCTV System - China RS485 Hub and RS485 Splitter
RS-485 / RS-422 HUB
Renkforce RF-19"-USB2-RS422+485-8 8 + 2 ports Serial hub meets industrial requirements, Steel casing Black | Conrad.com
Yn-5204 Isolated 4-port Rs485 Hub Repeater Instead Of Ut5204 Isolated Rs323/485 To 4-port Rs-485 Hub Yn5204 - Replacement Parts - AliExpress
RS485HUB : 4-Port RS485 Repeater / HUB with RS232 Port - R.E.Smith Serial Communications RS485 RS232 RS422
MHUBX8 8-port RS485 Repeater / Hub with RS232 Port - R.E.Smith Serial Communications RS485 RS232 RS422