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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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Mettler Toledo RS232 to USB Converter Cable for XPR Microbalances and Ultra-Microbalances | Fisher Scientific
C2G 1.5ft USB to DB9 Serial Cable - RS232 Adapter Cable - serial adapter - USB - RS-232 - 26886 - USB Adapters - CDWG.com
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