4 Port Professional RS-232 USB 2.0 to Serial Adapter
USB-RS232-WE-5000-BT_0.0 - FTDI
USB 2.0 to Serial (9-Pin) DB-9 RS-232 Adapter Cable 6ft Cable - Sabrent
3ft USB to Serial Cable/RS232 Adapter - Serial Cards & Adapters | Add-on Cards & Peripherals | StarTech.com Europe
RS232 to USB converter - Victron Energy
1-Port Industrial USB to RS-232 Cable
RS232 to USB for connecting MC6 to FB/MB
Amazon.com: StarTech.com 3ft USB to RS232 DB9 Serial Adapter Cable - Up to 1 Mbps USB to Serial Converter - M/M USB to VGA Adapter (ICUSB232SM3) , Black : Electronics
Mettler Toledo RS232 to USB Converter Cable for XPR Microbalances and Ultra-Microbalances | Fisher Scientific
USB to RS232 Converter - 6ft - CAB-11304 - SparkFun Electronics
Amazon.com: CableCreation USB to RS232 Adapter with PL2303 Chipset, 6.6ft USB 2.0 Male to RS232 Female DB9 Serial Converter Cable for Cashier Register, Modem, Scanner, Digital Cameras, CNC,Black : Electronics
USB to Serial RS-232 adaptor
USB to RJ-45 (RS-232) Console Adapter - UC232B, ATEN Converters | ATEN U.S.A.
USB to RS232 DB9 Serial Adapter Cable - Serial Cards & Adapters | Add-on Cards & Peripherals | StarTech.com Italy
Insignia™ 1.3' USB-to-RS-232 (DB9) PDA/Serial Adapter Cable, with Prolific Chipset Black NS-PU99501 - Best Buy
5' USB to RS-232 DB9 Serial Adapter Cable – Serialio.com