In Pictures: MacGyver IT - 21 tools for IT heroes

On the road, under duress, or out in the boonies -- save the day with these essential IT troubleshooting and repair tools

Gefen HDMI Detective Plus Not everyone needs the Gefen HDMI Detective Plus, but when you do, you really need it. This tool caches EDID screen resolution information between video source and display for HDMI video, thereby preventing the constant resolution-search dance of HDMI monitors when switching devices. It’s also invaluable when long DVI or HDMI cables cause you to lose resolution from your computers. You can set the resolution range through DIP switches on this device (download the full manual for DIP switch documentation) and your Blue-ray device or computer will be less prone to forgetting what the correct EDID resolution information should be. An updated version, not yet shipping, offers a software tool to set EDID information that should make life even easier.

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