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4-Port USB to RS-232 Serial Adapter Hub
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16 Port RS-232 Rack Mountable USB to Serial Adapter - Coolgear
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StarTech 4-Port USB to Serial Adapter Hub with COM ICUSB2324X
4 Port USB to Serial DB9 Industrial RS232 Adapter 15KV ESD and Surge
StarTech.com USB to RS232 RS485 RS422 Industrial 8 Port Serial (ICUSB234858I)
ATEN UC2322-AT 2 ports Serial hub + USB to serial RS 232 converter White | Conrad.com
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StarTech.com 8 Port USB to RS232 Serial DB9 Adapter Hub - Q16087 - Shoplet.com
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StarTech.com 4 Port Serial Hub Adapter USB to RS232/RS485/RS422 Converter - ICUSB234854I - -
StarTech.com 8 Port USB to DB9 RS232 Serial Adapter Hub – Industrial DIN Rail and Wall Mountable | StarTech.com Interface Hubs
Moxa UPort 1150 $124.83 1Port Usb-To-Serial Hub, Rs-232/422/485 | Zoro.com
Moxa UPort 1130I: 1 port USB-to-Serial Hub, RS-422/485, Isolation
SUNIX - USB to I/O Adapter
Renkforce RF-19"-USB2-RS232-8 8 + 2 ports Serial hub meets industrial requirements, Steel casing Black | Conrad.com
Shop | StarTech.com USB to Serial Hub - 8 Port - COM Port Retention - Rack Mount and Daisy Chainable - FTDI USB to RS232 Hub (ICUSB23208FD) - serial adapter - USB 2.0 - RS-232 x 8
4 Port USB to RS232 Serial Adapter Hub - Serial Cards & Adapters | Canada
2-Port USB to RS-232 Hub - UC2322, ATEN USB Converters | ATEN U.S.A.
