This Insignia™ NS-PU99501 cable allows you to connect a device with an RS-232 (DB9) serial port to a USB hub or USB-equipped PC or Mac and supports data transfer rates of more than 115 Kbps for rapid performance.
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Purchased to connect legacy RS232 serial line to my computer. After consultation with the manufacturer, turned out this unit will only communicate at 115kbps where I needed 19200 or 9600 bps. Packaging did not clearly indicate this. If it had, I would not have purchased this device, since it would not do what I want. Device returned.