It's a pain to solder up barrel jacks and sockets, so these screw-terminal based versions are very popular for repurposing DC power supplies to other applications!
After you've thrown out your broken & crushed wassizthingy, you're usually left with the power adapter. Another power adapter for the junk drawer. Wouldn't it be nice to put it to some use, except for that funky useless 46 pin X-shaped proprietary connector. Grrr. Darn user-hostile hardware.
BUT, what if you could snip off the funky connector and replace it with something familiar, and reliable? Yup, here's just the perfect solution!
These screw-terminal 2.5mm male socket/female jack connector sets fit the purpose exactly! Snip the wire, measure the polarity, and match them into the labelled terminals for traditional "tip-positive" configuration.
This is another great connector for putting power to stringxels and stripxels!
Note: The 2.5mm pin diameter is less common than the 2.1mm version, but is easily the 2nd most popular. Surely you've tried to plug into what appears to be a 2.1mm jack, but won't fit? Yup, probably 2.5mm!
These are sold in matched jack-and-socket sets.