Tripp Lite 18in USB to Null Modem Serial Adapter FTDI w/ COM Retention M/F 18" - serial adapter - USB - RS-232 - U209-18N-NULL - USB Adapters - CDW.com
Original NETGEAR 12V 3.5A 42W Power Adapter AC Charger for Model C6300 Product AC1750 WiFi Cable Modem Router - Walmart.com
Monoprice Db9 Male/male Mini Null Modem Adapter : Target
Netgear Wireless Router Dsl Modem Power Supply Adapter Charger - Black : Target
Null Modem Adapter Serial DB25 Male to Male | Computer Cable Store
Null Modem Adapter Serial DB9 Male to Male | Computer Cable Store
External USB 2.0 Fax/Data Modem 56K V.92 - Bluetooth & Telecom Adapters | Networking IO Products | StarTech.com