StarTech 4-Port USB to Serial Adapter Hub with COM ICUSB2324X
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UC4852-AT | Aten USB to Serial Hub, RS422/RS485, 2 DB9 Male | Distrelec Export Shop
4-Port USB to RS-232 Serial Adapter Hub
8-Port USB to RS-232 Serial Adapter Hub
SUNIX - USB to I/O Adapter
USBGear Industrial 8-Port Terminal Block RS232/422/485 to USB Adapter with Isolation and Surge Protection - Walmart.com
8-Port USB to RS-232 Serial Adapter Hub
StarTech.com 8 Port USB to RS232 Serial DB9 Adapter Hub | StarTech.com Cable Interface/Gender Adapters
16 Port RS-232 Rack Mountable USB to Serial Adapter - Coolgear
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 - 16 Port - COM Port Retention - Rack Mount and Daisy Chainable - FTDI USB to RS232 Hub (ICUSB23216FD) - serial adapter - USB 2.0 - RS-232 x 16
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
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StarTech.com USB to RS232 RS485 RS422 Industrial 8 Port Serial (ICUSB234858I)
USB to Serial Hub 2 Port, serial hub usb RS232 hub serial hub to usb - Buy China USB to Serial Hub on Globalsources.com
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
Moxa UPort 1150 $124.83 1Port Usb-To-Serial Hub, Rs-232/422/485 | Zoro.com
StarTech.com 4 Port USB to Serial RS232 Adapter Hub with COM Retention - ICUSB2324X - -
Moxa UPort 1130I: 1 port USB-to-Serial Hub, RS-422/485, Isolation
8 Port USB to DB9 RS232 Serial Adapter Hub - Office Depot
ATEN UC2322-AT 2 ports Serial hub + USB to serial RS 232 converter White | Conrad.com
StarTech.com ICUSB2324 USB to Serial Adapter Hub - 4 Port - Bus Powered - DB9 (9-pin) - USB Serial - FTDI USB to Serial Adapter - Newegg.com
