Amazon.com: Power Supply Tester, 20/24 Pin Power Detection Tool Checker HDD SATA FLOPPY for Computer : Electronics
24" 40-Pin IDE Dive Ribbon Extension
Digital LCD Power Supply Tester for ATX 20 Pin & 24 Pin, Computer Power Connector CPU P4/EPS 8Pin/PCIe 6-Pin/Molex 4 Pin/Floppy SP4/SATA HDD Power Interface PC Tools,1.8'' LCD Screen - Newegg.com
Power Supply Tester, LED HDD//FLOPPY 20/24 Pin PC Power Supply Tester Black For Computer For PC - Walmart.com