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USB to 4-Port RS-232 DB9 Serial Interface Adapter - Sealevel
USB 2.0 to Serial (9-Pin) DB-9 RS-232 Adapter Cable 6ft Cable - Sabrent
3ft USB to Serial Cable/RS232 Adapter - Serial Cards & Adapters | Add-on Cards & Peripherals | StarTech.com
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USB to RS232 DB9 Serial Adapter Cable - Serial Cards & Adapters | Add-on Cards & Peripherals | StarTech.com
USB-C Multimedia Charging Adapter 3 Ports with PD 3.0 and BC1.2
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8-Port USB to RS-232 Serial Adapter Hub
4-Port USB 3.0 Hub Adapter with USB-C PD 3.0
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