COOLM 5.5mm x 2.1mm Female to 3.5mm x 1.35mm Male Plug Socket DC Power Cord

does exactly what it's supposed to. dependable adapter.

Works correctly as a size adapter and sizing is as described. Good pricing for two units. Recommend and would purchase again.

works well,as advertised came quickly

Just as described.

4 mm plug end fits Tascam DR-680mkII perfectly and snugly. Does not fall out of 4 mm socket, reducing the risk of cutting power to the recorder during use. Fits just as snugly as the OEM AC converter that comes with the recorder. This is a relief because some of the other 4.0 mm adapters I've tried from Amazon are loose and fall out of the recorder's power socket easily. NOTE: THIS DOES NOT FIT TASCAM DR-680, WHICH REQUIRES 5.5MM CONNECTOR. As others have noted, the wire seems flimsy and thin, but given the relative difficulty in finding suitable adapter that fits properly, I've accepted this possible limitation, hence, the 4 stars. HOWEVER, this adapter cable appears to be the same gauge wire which is used on the OEM Tascam AC adapter, so the choice of cable gauge seems to match the manufacturer's judgement on power handling capability and endurance. I have not owed these items long enough to form an opinion on their durability. Since the item works, my strategy is to buy more now as spares if the wiring fails later and these may later become unavailable.

Needed these to add a non-standard power supply for my mirrorless camera, since the supply that came with the ac adapter kit was unreliable. The new supply had a 5.5x2.1 plug and the camera battery adapter had the other side of this plug adapter. It feels fairly solid and works well. It makes a solid connection. A little pricey but it's a hard to find part, so I'm happy.

Says its made to convert 5.5 x 2.1 to 4.8 x 1.7, but it I think it's actually made for 5.5 x 2.5. I tried it on both, and it fits the 2.5 well, but takes a good bit of force to get on the 2.1. It does seem to work, though.

I used these 5.5mm x 2.1mm Female to 5.5mm x 2.5mm Male DC power adapter cables to adapt the protected male output from a Belkin 12V UPS to the 12V DC female input of a small computer with an Intel Atom N450, that I use for my home's network router. They fit both ends perfectly and are working as I need them to.

Works as intended. Needed it convert male to female.

Neutral item, I needed opne sop I bought it at the right price