YUSTDAPHc RC-x2555C1 DC Barrel Plug Converter, 2.1mm x 5.5mm to 2.5mm x 5.5mm, Cord

Works as advertised. Seems to be good quality. I am using two of these to power Apple AirPort Extreme (5th Generation) wireless routers with Belkin battery backup units. Connections are good and tight, and the flexible wire allows me to maintain the same clearance around the plus as the OE power adapter that came with the AirPorts. This is a much better solution than splicing and soldering wires together (that was plan B if this approach would not have worked).

This is exactly what I was looking for. I needed a converter plug for my Goal Zero Escape 30 charger and this is a very hard to find item, Goal Zero doesn't sell any converter plugs which is a shame.Hooked it up to my Sunsocket Energy bar and was off charging, outstanding.Fit and finish are great, fits snugly without any wobble. Get one of these if you are looking for a converter for any of your Goal Zero solar panels with the 5.5mm plug.

Fits as advertised.

AOK quality -- works just fine. In my application a right-handed male end would have been better. (Could not find one.)

This was exactly as described, well made, and it works as it should. Very handy item if you need to convert a DC power input or output. I like that the two ends are on a cord (rather than simply a barrel plug adaptor). This came in handy for my application.

I guess I got the wrong part. The package even says 2.1mm x 5.5mm to 2.5mm x 5.5mm, but this is a 2.5mm male end and a 2.5mm female end. I bought this to connect a 2.5mm charger for my Surface Pro 3 to the 2.1mm jack on my Anker battery, but the male plugs are the same dang size. So effectively, what I got was a 3" extension cable for a 2.5mm jack, which is USELESS!

I use this with several other adapters in order to route my external battery through a USB power meter. I measure .1 ohm through this, two 6 inch cables, a pair of USB to 2.1mm cables (about 5 inches each), a usb 3 male to male adapter and a power tip for my laptop

So hard to find! AMZL lost the package and did not send the replacement they promised, so I re-ordered. This cable is important because most 12V power supplies have 5.5mm barrels that accept 2.1mm pins - I needed something to accept a 2.5mm pin, and this does the trick. Took me a week to find it on other sites online while waiting for the lost package. Also, both ends fit snug!