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ESU-100 USB to Serial Adapter - Price, Specs
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DSPR-100 2-Port RS-232 PCMCIA Card with Attached Cable - Price, Specs
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Quatech USB to RS-232 Serial (QSU-100) Serial Adapter for sale online | eBay
ESU-100 USB to Serial Adapter - Price, Specs
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USB to RS-232/422/485 Isolated Converter Quatech Model SSU2 ...
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USB Singe-Port Serial Adapters Datasheet by B&B SmartWorx, Inc. | Digi-Key Electronics
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QSU2-400 Quatech 922Kbps Quad-Ports RS-232 / RS-422 / RS-485 USB 2.0 Serial Adapter
Quatech QSU-100 RS-232 Serial Adapter - USB 990-0037-01G | eBay
SSP-100 Quatech 1 Port Rs-232 Serial Pcmcia Card
