OMNIHIL Adapter Plug Converter 5.5 millimeters x 2.1 millimeters Female Plug to 5.5 millimeters x 2.5 millimeters Male Plug

For those of you who are trying to mate a Belkin Battery Backup unit to an ATT BGW210-700 Router, here is what you need to know. The Belkin has a 5.5mm X 2.1mm plug. The BGW210 accepts a 6.3 X 3.0mm plug. As far as I can tell, this seller does not have that size adapter. So do a search on Amazon for LANMU usb to dc. An assortment of plugs contains the one you need. I give this seller 5 stars for an easy return.

I have an old Maxtor OneTouch III external disk drive which requires 12v @ 3A via 5.5mm x2.5mm. Lost the original power supply but have several at the right voltage and current but the connector is 5.5mm x 2.1mm. This little adapter did the trick. Not much to go wrong with the thing. So if you need a small bore to larger bore (2.1mm to 2.5mm) adapter , look no further. This'll get 'er done.

Exactly as advertised to adapt a 5.5 mm x 2.1 mm power connector to a 5.5 mm x 2.5 mm connector. Seem to be well made. Only negative is rather pricey at nearly $9 for this small item.

Works great. I think it is a little on the expensive side, but it worked perfectly. It fit my Phillips Hue bridge with no issues.

Using this to use 3rd party power supplies with HX Stomp. This one plug lets you use a OneStop, BOSS, or other standard 9V pedal power supply with an HX STomp (Assuming you can give 1000mA to it) without special cables.

This adapter works like it should.Using it to adapt a Medela car adapter to our Lansinoh Smart Pump.Having a power adapter for in car pumping has been a lifesaver.

I purchased this to adapt my Belkin UPS that cam with the Uverse 3600HGV modem to the new replacement UVerse BGW210 modem. Once again I have backup if power fails!

This device was used to adapt a Celestron cable for use on a Meade telescope. It is exactly what I needed and it works great.

My rating of 4 is only because it is not made of copper or bronze, otherwise it performs well.

Not much more to say than that. First clue was that the tolerances were off and the plug would barely stay connected. Very loose. It got hot enough that the plastic smoldered and melted. Very likely would have started a fire if I hadn't been attending it.

cheap and does not maintain connection to device...