TRENDnet TU-S9 USB to Serial Converter USB 1.1 to RS-23 *New Unused* | eBay
TRENDnet Model TU-S9 USB to Serial 9-Pin Converter Cable, Connect a RS-232 Serial Device to a USB 2.0 Port, Supports Windows & Mac, USB 1.1, USB 2.0, USB 3.0, 21 Inch Cable
Amazon.com: TRENDnet USB to Serial 9-Pin Converter Cable, Connect a RS-232 Serial Device to a USB 2.0 Port, Supports Windows & Mac, USB 1.1, USB 2.0, USB 3.0, 21 Inch Cable Length,
ORIGINAL TU-S9 USB to RS-232 DB9 Serial Converter DB-9 RS-232 Converter Cable - AliExpress
TRENDnet Model TU-S9 USB to Serial 9-Pin Converter Cable, Connect a RS-232 Serial Device to a USB 2.0 Port, Supports Windows & Mac, USB 1.1, USB 2.0, USB 3.0, 21 Inch Cable
TRENDnet USB to RS-232 Converter Cable TU-S9 - Adorama