240W Laptop Charger for Dell Alienware, 7.4mm Round Tip, 19.5V 12.3A

Great investment. I needed a 180W 19.5VDC Dell AC adapter for a Dell OptiPlex micro-tower and got a 240W adapter 'just in case'. What a difference. Not only did the 'underpowered AC Adapter' warning disappear and the performance improve but the fan began running less and the core temperatures dropped about 20'C; I assume that the lowered performance taxed the CPUs more and caused them to run more. Now, I mostly set it and forget that it is there (that is a compliment). It retains the blue-ring power-on indicator on the 7.5mm plug, like the Dell OEM adapters, so you can see the power supply status, at a glance. It is fairly large and heavy, though: about 8"x4"x1" and 625g/1.5 lbs, without cords, which is no issue in a stationary use, like mine, but you might want to consider the size and weight if you are lugging your laptop around a lot. All in all, a fine item. Recommended.

I try out my AC adapter for my Alienware and it works perfectly plug it in its works

I have an Alienware R4 17" laptop, and this works very well as a back-up charger so I can leave my other one plugged in at my desk. Definitely recommend if you need a second charger for a power-thirst laptop.

This one works properly, unlike many of the lower priced, poorer speced (tho same wattage) adapters we find on other online retail sites. Great value!

It works fine for my Alienware 15 R2 (upgraded logic board from i7 6700HQ & 970M to i7 6820HK & 980M and yes the battery WILL drain if you use the 180w stock charger on the 6820HK & 980M config) but when plugged in I can hear coil whine. Its very quiet but I hear it and for someone in a very quiet environment it would get annoying FAST.

My title says it all. I just ought a brand new battery and this PS will keep my laptop alive but will not charge battery. when I connect the original Dell power supply, of the exact same size and rating, it immediately, and quickly, charges. But, with this new supply (that is physically WAY bigger than the Dell OEM PS) my laptop has been sitting on 13% charged for over a week. Look elsewhere.

I was initially concerned by the off-brand nature of this adapter, but it eliminated my on-screen adapter warning and has flawlessly been powering my 17R3 for weeks. No coil whine with my particular unit. Yay. Can't comment about ultimate longevity, but so far, so good.

I must be hard on power cords, because this is the second replacement I've needed. The cord is exactly the same as the original that came with my laptop in length, charge, and structure. Delivery was super fast, which was greatly needed since I needed my laptop for work.

I have a Dell Alienware m15 R7 laptop. I forgot my charger when I travelled out of town and bought this to replace it. It works well, I think it charges the computer as quickly as the original charger. Unlike some lower quality chargers that I've bought over the 36 years that I've used laptops, this charger doesn't run hot and the connector and the laptop don't feel hot after 24 hours of use.

Day 1, so far no observable physical damage, ill update if it dies in a while like others say

I have had this item more than a year, and it is working fine, just like the original one, if not better. The only difference that I felt is that the LED at the tip of the charger is a bit stronger than the original one. This could be both good and bad if your work station is in your bedroom. At night, it could bother you, if you are too sensitive (I wrapped a napkin around it and now, it is all fine). Other than this, it is really perfect.

Not sure what the original charger looked or performed like but this does the job with no complaints or issues!

I just received this power supply-a day earlier than expected-and plugged it in. The computer is powered and the battery is charging. No issues to report, but if there are problems in the future I will update this review. I have to comment that I haven't detected any humming sound like a couple of other customers have said, and I'm not hard of hearing so I think I would notice. Also, some have complained that the supply itself is too large or too heavy, but I compared it to the original and it's amost identical in weight and size, maybe a tad thicker. This is a 240W 12.3A power supply, and you're not going to be able to get it much smaller or lighter. Check your computer, and if it doesn't need high power requirements of this supply, get a smaller one that does. *Almost-four-month-review: I feel badly for my unit in hot weather because I don't have air conditioning and it must be operating at fairly high temperatures, but it has held-up just fine so far. As a side note, I have a history of unplugging my battery for months at a time because I don't like constantly charging a battery and wearing it out when I have the computer plugged into a wall outlet 99% of the time (that may change when I go back to school). At a certain point, I thought the battery connector within the computer was faulty because the battery wasn't getting charged. With this new power supply, the computer operates properly AND the battery gets charged when I plug the battery back in. I think it was a warning sign that my old power supply was nearing the end of its life, but I didn't recognize it as such. Anecdotal, but interesting. Update: Somewhere between six months and a year my computer performance kept dropping after starting to use this power supply. I suspected everything thing from a worn-out motherboard to bios to a worn-out GPU. then I used hwi64 to have a close look at every sensor stat. My GPU wasn't getting over 0.6V. It should be around 0.9-1.1V. So I tested this power supply and lo and behold, it was defective. It worked well when I first got it, which means it burned out sometime in the first year I had it. My advice is DO NOT BUY FROM THIS MANUFACTURER. Buy from the OEM or a reputable manufacturer!