StarTech.com ICUSB23216FD USB to Serial Hub - 16 Port - COM Port Retention - Rack Mount and Daisy Chainable - FTDI USB to RS232 Hub - Newegg.com
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Digi HUBPORT/14 19 14-port USB Hub USB Rack Mount 14 USB Port(s)
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StarTech.com USB to Serial Hub - 8 Port - COM Port Retention - Rack Mount and Daisy Chainable - FTDI USB to RS232 Hub - Convert a USB port into 8 RS232
DELOCK 64039: Hub industriel 19" 13 x USB 3.0 type A. chez reichelt elektronik
SEDNA - 13 Port USB 3.1 Gen I Hub (5Gbps) - 19 Inch 1U Rack Mount - Newegg.com