Tripp Lite Keyspan High Speed USB to Serial Adapter - serial adapter - USB - RS-232 - USA-19HS - USB Adapters - CDW.com
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C2G 1.5ft USB to DB9 Serial Cable - RS232 Adapter Cable - Serial adapter - USB - RS-232 - blue | Dell USA
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Insignia™ 1.3' USB-to-RS-232 (DB9) PDA/Serial Adapter Cable, with Prolific Chipset Black NS-PU99501 - Best Buy
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