USB Relay 16-Channel 3-Amp DPDT with UXP Port: Relay Pros
16-Channel 9-36V USB Relay Module – SainSmart.com
Amazon.com: SMAKN LCUS-1 type USB relay module USB intelligent control switch USB switch : Electronics
LCUS-1 LCUS-2 1 2 Channel USB Relay Module Smart Control Switch CH340 Converter | eBay
USB Relay Controller Board - 4 Channels for Home Automation
NOYITO 2-Channel Micro USB Relay Module USB Smart Control Switch USB Intelligent Control Switch (2-Channel Micro USB): Amazon.com: Industrial & Scientific
TOSR140 - 4 Channel USB Relay - (Password/Momentary/Latching)