Add one serial RS-232 port with com retention to any laptop or computer with a USB port USB to Serial USB to RS232 USB to DB9 USB to Serial Adapter USB to Serial Port
StarTech. com ICUSB2321X USB to Serial Adapter - 1 Port - COM Port Retention - Texas Instruments TIUSB3410 - USB to RS232 Adapter Cable
by NeweggConsumer Electronics
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$48.00
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