Rosewill Power Supply Tester for $12 + free shipping
For its newsletter subscribers only, newegg offers the Rosewill Power Supply Tester, model no. RTK-PST, for $14.99. Coupon code "EMCJKKF66" cuts it to $11.99. With free shipping, that's the lowest total price we could find by $11. It features an LCD readout, voltage too low / too high warning, 6- and 8-pin PCI Express connectors, and more.
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