Amazon.com: Aten UC232A USB to PDA/Serial (DB9) Adapter w/PC & Mac Drivers : Electronics
USB Converters
USED USB to Serial Converter Adapter FOR ATEN LT UC232A Supports Vista/XP/ME/98SE/2000/Win7/Win8|converter adapter|adapteradapter converter - AliExpress
1M USB to RS-232 Converter - UC232A1, ATEN USB Converters | ATEN U.S.A.
UC232A USB to PDA/Serial (DB9) Adapter w/PC & Mac Drivers - Newegg.com
Amazon.com: Aten UC232A USB to PDA/Serial (DB9) Adapter w/PC & Mac Drivers : Electronics
Tripp Lite U209-000-R RS232 DP9 To USB Windows XP Vista Windows 7 Cable | eBay