Visit our Business Solutions website >>

Lenovo ThinkPad 90W AC Adapter

Lenovo ThinkPad 90W AC Adapter
alaScore 77

107 reviews

Sep, 2017

alaTest has collected and analyzed 107 reviews of Lenovo ThinkPad 90W AC Adapter. The average rating for this product is 3.6/5, compared to an average rating of 4.1/5 for other Laptops for all reviews. Reviewers really like the design. Many are negative about the usability and reliability. Comments are divided on the price.


reliability, usability

We analyzed user and expert ratings, product age and more factors. Compared to other Laptops the Lenovo ThinkPad 90W AC Adapter is awarded an overall alaScore™ of 77/100 = Good quality.

See all Lenovo Laptops

Review analysis

(Based on 107 reviews)

User Reviews  

Showing 59 review(s)

Expert Reviews User Reviews


Below is a list of reviews for this or similar products. If you think this grouping is wrong please click here to flag.
Read more on our FAQ’s page.
Showing 1 - 58 of 59 Show Reviews: in English | in other languages (48)

Consumer review by: ( review summary for Lenovo ThinkPad 90W AC Adapter


alaTest has collected and analyzed 48 user reviews of Lenovo ThinkPad 90W AC Adapter from The average user rating for this product is 2.8/5, compared to an average user rating of 3.9/5 for other Laptops on There are some mixed views about the price, but many are less positive about the usability and reliability.

reliability, usability

52% of the reviews on give this product a positive rating.

This summary is based on the products: Lenovo 40Y7659 ThinkPad 90W AC Adapter - power adapter - 90 WattLenovo 40Y7659 ThinkPad 90W AC Adapter - power adapter - 90 Watt

Sep, 2017

Consumer review by: N/A (

ThinkPad 40Y7659 90W AC Adapter


Don't buy the cheap after market power cords, you will end up buying this one anyway. It's worth the extra money ($20-30). The power cords wear out over time but the cheap after market ones wear out much much faster.

Original part


Aug, 2011

Consumer review by: N/A (

ThinkPad 40Y7659 90W AC Adapter


When it was new, the device worked flawlessly

Breaks around the PC connector. It's a shame that the expensive part of this power supply doesn't detach from it, the AC prongs are very unlikely to suffer all the wear and tear

Jul, 2010

Consumer review by: DanAdamKOF (

Poor strain relief means it dies over time


I treat all my electronics with care. After my second AC adapter died, I tried to treat my third one with a lot of care. I made sure that, whenever possible, the gray area wasn't pinched or bent, etc. It lasted only a few months longer than the others.

When it isn't broken, adequately powers and charges Thinkpad

These die after a while. The gray strain relief stops working, and the cable inside it starts to fray. Eventually your cable will make intermittent contact, and finally make none at all, leave it up to you to fix it somehow or shell out for a new one

May, 2009

Consumer review by: N/A (

Works fine, but runs hot


I got this on sale for $50 here which I personally think is too much for a power adapter, but the average price seems to be closer to $60-70 elsewhere.

What can I say? It works with my T60p and NewEgg shipped it out quickly

Temperature: the transformer runs not warm but hot to the touch. This is not a huge deal given that it will generally be left on the floor, but the temperature difference between this Lenovo-branded adapter and the IBM branded adapter that originally...

Jan, 2009

Consumer review by: Dygear (

Good Product Bad Tips


I work on an Ambulance so this is useful when you only have a 12V Cigarette lighter to use. Can also charge off a normal outlet

The tip supplied with the product for my device (V20 is the Tip - for the Thinkpad z61m) simple will not stay plugged into the back of the computer. Making it VERY frustrating to use, espeically when you put down the laptop walk away from the computer...

Dec, 2008

Consumer review by: G. Bears (

Works as expected.


I just needed an adapter to use my laptop and since the manufacturer website was charge almost double, I found Newegg to be more competitive.

It works, much cheaper than at the manufacturer website

Spending this much money on a AC adapter breaks my heart but not really a con

Jul, 2008

Consumer review by: WoodenSoul (

Great straight replacement


We have 100+ Lenovo T430's at our company and we've purchased at least 20 of these to replace ones users loose and wear out from normal use. I feel that better cable management would be a plus as I've never cared for the Velcro type but it's a small...

not generic, non-grounded plug

cable management

Jul, 2013

Consumer review by: g (

Lenovo description is wrong


[...] Lenovo's customer service is one of the worse I've ever seen. For my application I specifically needed a 3-prong AC adapter (with the ground pin) as shown and advertised in the picture/description by Lenovo. I called Lenovo and they told me that...

Nov, 2009

Consumer review by: g (

Lenovo description is wrong


Lenovo's customer service is one of the worse I've ever seen. For my application I specifically needed a 3-prong AC adapter (with the ground pin) as shown and advertised in the picture/description by Lenovo. I called Lenovo and they told me that it was...

Nov, 2009

Consumer review by: Mike (

Product worked great


The product worked great and even the computer stores no longer carried it but Radio Shack did.

Compact Design ; Durable Construction ; Fast Charging ; Good Cord Length

Aug, 2009

Product Specifications

As a global leader in the PC market, Lenovo develops, manufactures and markets cutting-edge, reliable, high-quality PC products and value-added professional services that provide customers around the world with smarter ways to be productive and competitive. PRODUCT FEATURES: Convenient access to power; Plugs into an available wall outlet to deliver AC power to your ThinkPad notebook and recharge the system battery.


Form Factor: None


Front Camera: Yes
Front camera resolution:1280 x 720

Dimensions & Weight



Product Type:Power adapter/Power adapter - AC / car / airplane
Subcategory (AG):Power adapters


Maximum on-board graphics adapter memory:2
Number of displays supported (on-board graphics):3
On-board graphics adapter DirectX version:12
On-board graphics adapter family:Intel® HD Graphics
On-board graphics adapter ID:0xA16
On-board graphics adapter outputs supported:DisplayPort, Embedded DisplayPort (eDP), HDMI


Country Kits:Bangladesh / India / Pakistan / South Africa / Sri Lanka/Denmark/Europe/Europe / Saudi Arabia/Philippines / Thailand / United States/Switzerland/United Kingdom
Model:90W AC Adapter/90W AC/DC Combo Adapter
Packaged Quantity:1
Product Line:Lenovo/Lenovo ThinkPad


4G: No

Ports & interfaces

Total number of SATA connectors:4
USB 3.0 (3.1 Gen 1) Type-A ports quantity:1

Power Device

Form Factor (AG):External
Power Provided:90Watt
Voltage Required:AC 100-240/ DC 11.5-18V/AC 100-240V


Conflict Free processor: Yes
ECC supported by processor: No
Maximum internal memory supported by processor:16
Maximum number of PCI Express lanes:12
Memory bandwidth supported by processor (max):25.6
Memory channels supported by processor:Dual
Memory clock speeds supported by processor:1333,1600
Memory types supported by processor:DDR3L-SDRAM, LPDDR3-SDRAM
Processor cache type:Smart Cache, L3
Processor codename:Haswell
Processor Series:Intel Core i3-4000 Mobile series
Thermal Design Power (TDP):15

Processor special features

Intel 64: Yes
Intel Clear Video Technology: No
Intel Identity Protection Technology version:1.00
Intel ME Firmware Version:9.5
Intel Secure Key: Yes
Intel Secure Key Technology version:1.00
Intel Small Business Advantage (SBA): No
Intel Smart Connect Technology version:1.00
Intel TSX-NI: No
Intel TSX-NI version:0.00
Intel Virtualization Technology (VT-x): Yes
Intel Virtualization Technology for Directed I/O (VT-d): Yes
Intel® Secure Key: Yes
Intel® Small Business Advantage (Intel® SBA): No
Processor ARK ID:81018
Processor package size:40

Service & Support

Type:1 year warranty


Recovery operating system:Windows 8.1 Pro


Hybrid hard drive (H-HDD) cache memory:8
Hybrid hard drive (H-HDD) cache type:Flash
Hybrid hard drive (H-HDD) capacity:500