Comtrol | RocketPort USB Serial Hub III 8-Port
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Amazon.com: StarTech.com USB to Serial Hub - 8 Port - COM Port Retention - Rack Mount and Daisy Chainable - FTDI USB to RS232 Hub (ICUSB23208FD) : Everything Else
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StarTech.com 8 Port USB to DB9 RS232 Serial Adapter Hub – Wall Mountable - ICUSB2328I - -
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Comtrol 3000223 RocketPort USB Serial Hub III 8-Port | eBay
7XV5655-0BA00 - Ethernet Serial Hub - ID: 109744388 - Industry Support Siemens
Amazon.com: StarTech.com 4 Port USB to Serial RS232 Adapter - Wall Mount - Din Rail - COM Port Retention - FTDI USB to DB9 RS232 Hub (ICUSB2324I) : Everything Else
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Renkforce RF-19"-USB2-RS422+485-8 8 + 2 ports Serial hub meets industrial requirements, Steel casing Black | Conrad.com
8-Port USB to RS-232 Serial Adapter Hub
USB to 16 Port Serial Hub - SY-HUB15049
