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Black Box 8-Port USB to RS232 Serial Adapter / Converter, 8 x DB9 Male - IC1023A - -
Keyspan RS232 to USB-A Adapter, DB9, 3-ft Cable | Eaton
4-Port USB to Serial RS232 Hub | TRENDnet - TRENDnet TU-S4
USB to RS232 Hub (4-Port / Industrial) – CommFront
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8-Port Terminal Block RS232/422/485 to USB Isolation/Surge Protection
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StarTech.com 8 Port USB to Serial RS232 Adapter - Wall Mount - Din Rail - COM Port Retention - FTDI USB to DB9 RS232 Hub (ICUSB2328I)
Insignia™ 1.3' USB-to-RS-232 (DB9) PDA/Serial Adapter Cable, with Prolific Chipset Black NS-PU99501 - Best Buy
USB to TTL RS232 RS485 Serial Port Converter Board 3 USB HUB Splitter Expansion|Computer Cables & Connectors| - AliExpress
StarTech 4-Port USB to Serial Adapter Hub with COM ICUSB2324X
Gearmo USB 8 Port Serial RS232 featuring FTDI Chipset with LED Indicators
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4-Port USB to RS-232 Hub - UC2324, ATEN Converters | ATEN Corporate Headquarters
