Replacement AC Power cord f/ BROTHER MFC-7420 PrinterStandard 3 Prong Pin AC Power Cord Cable for Desktop Computers. Works on most model desktop computers and monitors. This Black color cable uses a 3 prongs USA standard power cable design and is suitable for many applications including PC power supply units, LCD CRT monitors, plasma tv, game console such as PS3 or xbox 360 adapter and many more electronics using 3 prong power cord. This is the standard US 3-prong power cable. This power cable will work on all standard ATX or mATX (Micro ATX) power supplies and is the most common power cable for a desktop computer. Standard computer power cord and standard monitor power cord.