Kensington K64637WW ClickSafe Keyed Laptop Lock for Business

I chose this model after extensive research. while I would prefer a combo lock for ease of use, I have read that due to machining tolerances (in any combo lock design), some people are able feel the tension change in the wheels when approaching the correct number. also, another amazon reviewer of a Kensington combo lock (not sure which model) stated that an incorrect combo setting will prevent the combo version of the lock from opening (I don't know if that's really true, check the combo version reviews here on amazon-someone talks about having that issue and calling Kensington regarding it). the coiled cable versions seemed too thin for my liking. using a key seems to be the best secure way of using this type of lock. (I also read security sites that say that round keys are not nearly as secure as flat keys, so these flat keys are a good choice.)as to the lock itself. excellent!!! low profile, sleek design, VERY easy to just 'click' onto the little tab that I had previously mounted into the Kensington lock slot. really great design in how the cable mounts securely to the lock and can rotate all around the lock in orientation so it can face in many different directions and not put strain on the lock or laptop unnecessarily.The lock head 'clicks' onto a little pin that you need to secure into the Kensington slot when you first set it up. then that little pin stays in the hole, and you just click the lock onto it to lock your laptop, and then insert the key into the hole in the lock head and turn and the lock unlicks to take off. the little nub that stays in she laptop locking slot is one you mount ahead of time and the actual locking head just clicks on and off of it. the little fixed nub that the removable lock head clicks onto is round and has two elevated cylinders that the lock grabs(I'm not describing it well, but it seems very secure and doesn't stick out much at all from the laptop when the lock isn't on it. (maybe 1/4 inch, and its smooth and rounded and I really don't consider it ugly or a problem at all.) actual daily usage of the lock is very fast: click on n click off. no fussing around trying to get it into the little plastic lock hole on the laptop n make sure it is snug. I read reviews about some locks wobbling or not being secure in the laptop and this setup removes that problem.I think the little nub that permanently seats into the Kensington slot is pure genius (yes it is removable, but not while the lock is on it, and you just install it once and you can get it as perfect and tight as you want to then). I have to disagree with the other reviews that complained about it. this to me makes very good sense. otherwise you'd have to futz with it every time you wanted to attach the lock, and I could see how you might not always get it aligned, or tight, and it would start to wear the slot (metal is harder than plastic so over time the metal bar would wear on the plastic lock slot). plus it would just add hassle and time to locking and unlocking the lock so after awhile I could see mine being stuffed in a drawer somewhere.note: when you first install the little nub--you insert the little 'T'bar into the locking slot. then you take the teeny allen wrenchthey give you and you stick it into the matching hole in the top of the nub and turn clockwise. this allen wrench will turn that little 'T' bar inside the slot 90 degrees so its now perpendicular to the little slot and can't come out. it also drives a second little piece of metal attached to the outer side of the nub into the slot--so it holds the nub in the slot and the inner part remains at 90 to the slot holding it securely (the inner and outer bar are 90 to each other so it grips the inside of the lock and holds it perpendicular to the orientation of the slot. my inner geek thinks that is just really cool and well made. I think people who had trouble putting in the nub didn't grasp the concept that the little flat bar on top ends up sitting in the locking hole and securing it. so tighten that sucker down with the allen wrench!I like the thickness of this cable (5mm thick). It seems secure but not ridiculous. if you look up the Kensington ultrabook cable click lock the cable is 10mm thick. that was my other choice. I thought it would look to big, but looking at the 5mm cable, this doesn't seem garish so I would probably be happy with the 10mm choice as well. I believe this gives you about 6 feet which seems to be a good length for down to a table leg.it also comes with a cable wrap holder for keeping it coiled up when not on the laptop. I like that. its clearly made to be reused and I appreciate that--makes it easy to store.the only thing I would improve upon again would be that a combo lock I think would be a little easier than keys- even though you can register the keys and get fast replacements if you lose one. of course, you don't have to worry about people trying the lock hoping they'll get it or feel like a challenge.OK, this was quite the long review--like I said, I did a lot of research before making this choice, and sight unseen I was a little confused on some of these issues before I actually held the lock in my hot little hand. but, having done so, I feel good that I made a really good choice on this one, so I wrote this to help other folks clarify issues prior to purchasing.

Having spent several hours looking up various laptop locks, reading and even viewing reviews, and considering the pros and cons listed, I decided on purchasing this one. I wanted laptop thief deterance for 5 to 10 minute absences, with the assurance I can get it on and back off (when I want to leave), without attracting too much attention.It offered keys; usually a superior system. Too many combinations reported as sloppy or jamming: users who set a combination then can't get them to work. And these keys were reported as unique, not the kind that some reported as allowing a master to open them. I didn't like the reviews where some locks were so easy to pick. (they even had videos.) Plus, having 2 keys offered security in that if I couldn't find one, I'd know where I put the other one. A drop of oil or WD40 in the lock right off solves keys reported to stick or wont' turn.The nub you initially set on the computer is nice and tight, allowing a snap of the lock on and off. It feels tight and secure. Plus this product seems a newer generation of design. I think they solved some of the prior problems.The 6 foot cable is adequate. It will halt a santch & grab, while you pop up to the counter or restroom. People who criticized about wire cutters, or hours without oversight are being unreasonable. Once the nub is on the laptop, the whole system (sans keys) is one piece and coils up/fits into a pack or carry case. it goes on and off fast and easy.Price was slightly higher than the middle, but, you get what you pay for, it's been worth it so far. My laptop has always been there when I hustle back in either the library or coffee shop.Addendum: More than a year later, I'm still satisfied.

Kensington is the #1 producer of Laptop Locks and most Laptops are designed to accommodate a Kensington lock. This lock is Great! It has sturdy solid metal parts and I expect it will do a great job for a long time. That said you would expect this nearly exclusive Laptop lock maker to provide better installation directions. The directions that came with my keyed Kensington Laptop lock were the briefest of generic directions applicable to most keys & Laptops. But they were missing a very important step in the installation. The directions simply say, "Insert the lock and turn it 90 degrees " to secure it. However the Lock, as packaged requires preparation before installation that is not noted in the directions. What they fail to tell you is that the lock must be lengthened using the most miniscule and fragile Allen wrench that I have ever used in my life. The directions only mention the Allen wrench as a means to tighten the lock after you have inserted & turned the lock in the lock port. Nowhere is it mentioned that the lock must be lengthened to its longest point before it can be turned those 90 degrees in the Laptop. I wasted 45 minutes trying manipulation and experimentation with the only result being that I became more & more frustrated. It was pure luck that I managed to get the lock installed on my Laptop after trying numerous possible solutions.Kensington needs to add the simple but necessary instructions to, "lengthen the stem of the lock" before inserting it into the lock port. That will save folks like me a lot of heartburn.