Does Not Work As a Power Cable for Nuvi 250
930738
I bought this to use as a power cable but it puts the Nuvi into Computer mode and disables the mapping GPS functions.
I thought the reviews I read before I purchased it said that this would work as a power cable but it doesn't.
Money wasted.
3331250
This item did not work for my Nuvi 255W as advertised. It failed to work for 2 other Nuvi models that I have as well. Feeling extremely lightweight to the point where it felt empty, I decided to carefully pry the thing apart, and much to my surprise, there was nothing inside the plastic charger body. There was nothing connecting the plug prongs to the power cord - A MAJOR SHOCK AND/OR FIRE HAZARD!!! Don't waste your money or risk loss of life or property by purchasing this item.
4370956
The only reason I bought this device was to charge my HP Stream 7 while having access to 2/3 USB ports. The USB ports work fine, but the device will not charge while connected to it (have it connected to a 4.8amp Cable Matters USB wall charger). I didn't realize this limitation was the rule, not the exception. For what the product is I would recommend it, but please be aware power cable is to power your plug in peripherals, not to charge your device.
1036793
It's hard to rate a product as simple as a power cable.  Either it works (5 stars) or it doesn't (1 star).  The cable I received I tested with three different transformers and three devices and it didn't work with any of them.  I'll be returning it for replacement.
Although the picture on the front of the box which shows an 8-pin Lightning cable is correct, the "compatible" devices listed on the back of the box are all the older style which take 30-pin cables.
*Update*  Shortly after receiving the cable, I was contacted directly by the seller, who upon learning that it was defective, made every effort to end-run Amazon to ensure that I received a working cable ASAP.  A replacement was in my hands four days later and works perfectly.  Under these circumstances, I couldn't ask for better service from PoweraddDirect.
The cable is appears to be heavier duty than most; you may have to modify your case a bit to accommodate a larger input end.
30338
This cable does not provide power to the connected device at all.
Cable packaging labelled "Not for device charging - for data sync only".
3505646
This does NOT work with Garmin nuvi 2597.. When it is plugged into wall, the Garmin screen says. "The attached power cable cannot charge your device.  I tried several times, and all that happened was the GPS continue to drain its charge.
2058980
The cables I had wouldn't fit in the Garmin's socket. Apparently, the socket is non-standard. I'm not happy about this, but that's what it is.
3709251
Sometimes I wonder what some companies are doing when they remove basic features from their products. Look at Garmin for example, none of their current models can play mp3 files even though this was a feature on the Nuvi 360 which came out years ago.

For this particular one, nuvi 40LM, it doesn't have a charging connection built into the suction cup holder. This means to use it in a car one would have to first connect the USB charger, then attach the GPS to the holder. Not good for car use.

I'm returning my 40 LM.
3735467
I need to return. I plugged in my security camera to the USB port on monitor. turned on the power to the monitor and menu set up source. there is on USB source in menu mode. won't work. Also no USA power cord need to buy adapter.
3788601
The charger for the car did NOT work for my Garmin Nuvi 200w. I plugged it in like the rest of the chargers I bought (mine was stolen) for this brand, and they all act like I plugged it into a computer. Very disappointed.
1592548
Not Happy!  I bought this Garmin to take a vacation around the West.  To begin with I had avoidances checked for NO UNPAVED ROADS so I was in Truckee CA and wanted to go to Virginia City, NV.  It took me OFF the highway and put me on a dirt road that wasn't even fit for an ATV!  Was very angry!  Then it had traffic alert on it, it worked for about the first thousand miles then all of sudden a window kept popping up saying my power cord wasn't compatible and wouldn't work.  It was the cord that came with the Garmin.  Then it just shut off completely!  I wouldn't recommend this model.
4938958
This charger doesn't work in the Nuvi 780. At least I couldn't get it to work. Plug it in and the GPS tells you to plug to a computer. The GPS end is used for computer hookup. I think you need something Comparable to Garmin 010-10747-03, with a wider plug on the GPS end.
1491911
Do not buy! This does not work as advertised for a Garmin 2598. I received the following message on the Garmin.
 "The attached power cable cannot charge your device. Use the cable that was provided with your device."
929437
Doesn't charge my ASUS, so basically the cable is worthless for me.
857449
The cable that's supposed to pass through the power from the 2.5" bay to the 3.5" doesn't work on my unit. At least one other reviewer had this same issue. I had to connect power directly to both bays for the 3.5" drive to function. Still debating on whether I should return it or just live with it. Everything else seems to function.
1932780
The cord described as working for both Data and power. It worked for Data but did not work as a Power cord at all. This is useless for us. We are not able to use it anymore and now have to get another one. Very disappointed.

https://www.amazon.com/dp/B0092VKQ3O/ref=cm_cr_ryp_prd_ttl_sol_0
2710208
It worked but would not charge my GPS. I returned it for a refund.
Customer service contacted me about the return and offered a replacement unit at no cost. I declined.
They said that some devices require more power than this unit puts out. However the description read: "Can charge all USB connection devices. Such as Apple iPhone 6 6s 6s plus; iPhon5 5s; iPhone 4s; Samsung Galaxy; LG; iPad; iPod; Kindle; Tablets, Computers etc." if it is supposed to charge tablets and computers shouldn't it charge a CPS?
In their defense I have several other chargers rated at 2.1 amp output. Some will charge the CPS some do not. Since I can not test the output I can not say if it met the specification. It gets two stars because of the responsive customer service.