Rating: 
Summary: This mouse stinks
Review: I got this mouse several months ago for Xmas. It seemed great at first but it irritates the heck out of me now. It goes through a pair of AA's every month but the most frustrating thing is the lag. To conserve power it shuts down between movements. So you have to move the mouse before it registers a move. This causes it to be jerky as it shuts down easily. It's laying useless on my desk now. I hooked up the logitech that came with my laptop and I am much happier now.
Rating: 
Summary: Very smooth movement & agronomical design fits perfectly
Review: I love it, much better than the wired version I used to work with for 4 years. The first two things you'll notice as soon as you touch it is that it feels so smooth to navigate, almost gliding on the mouse pad! It feels lighter than the wired version and maybe the bottom supporters are from a smoother surface, it helps me allot in graphics programs and games where mouse friction is your big enemy. The new agronomical design and angel is also much better with an excellent hand grip. Now you also have a groove for your big finger and a counter groove for the last two fingers in the opposite side, so you feel like you are squeezing a hard clay object after squeezing it. I had some problems though with installing the drivers from the CD, the PC didn't recognize them, and kept sensing it as a USB device, what solved the problem was uninstalling all the USB ports and HUBS software from the system, then rebooting and manually pointing to the drivers on the CD. That's when it sensed the drivers and correct Human Interface drivers.. It worked perfectly since then.
Rating:
Summary: Different Versions, vastly different results!
Review: I have had two of these, one bought at a minor computer store, and the second (within a week) bought the second and returned the first. The first one I had refelected all the single starred reviews here--poor battery life, horrible, horrible tracking and jumpy/unresponsive movement. This really was upsetting because the Microsoft Blue mouse is super precise and wonderful--but uncomfortable to hold over a long period of time. (came with my wireless keyboard)
The second wireless explorer I bought is great--everything works as it should and it tracks wonderfully. On a side note, the first non-good mouse had problems with the side buttions, rather then going forward or back one page while browsing the web, it would jump two.
I was able to tell the two versions in the form that the non-well-working one had version 1.0A on the bottom, but that works doesn't say anything. Best of luck!
Rating: 
Summary: wireless with plenty freedom
Review: The key, if not the unique advantage of choosing a wireless instead of a wired mouse is the freedom of moving this device around. (Another positive is a greater distance between the mouse and the PC, but this is secondary.)At first, and especially compared with the wired version, the Microsoft mouse seems loaded with lead, so moving it around is all but smooth and easy. This is especially true when trying to pick it up, which is often... Furthermore, the material used slides far less easily on the surface than with its wired counterpart. A second negative is the ergonomics which is far less succesfully implemented than in its wired sister. However, after a day or two, I do not regret my wired IntelliMouse Explorer. If you're looking for true freedom, do take this nice mouse with you.
Rating:
Summary: Garbage, utter garbage
Review: I guess I should have realized that this mouse was going to be a piece of garbage when because the IntelliPoint 4.1 software wouldn't install, and MS Knowledge Database had me hacking the registry and deleting system files. Worst of all, after all of this trouble to get the software installed, the mouse worked fine - albeit a little sloppy on the tracking - until the first reboot. Windows now sees it only as an unknown USB device, despite several reinstalls, and connection attempts.
Rating:
Summary: An Easy Mouse To Live With!!
Review: I have to admit that I have gone through more mice than the average person. I get bored with them and seem to always buy a new one evry six months or so. After owning an IBM Optical Navigator Mouse, Logitech Dual Mouseman Optical, and the new Logitech MX500 I got tired of the cord and the way the mice fit in my hand. I have used the Intellimouse Explorer for a couple of months and I am very happy with it overall. As mentioned in some reviews, it does go through batteries a little fast but the precision, user's guide, and installation are first rate. This is the first mouse to feel really comfortable in my hand. I used to say that about Logitech but they began to make them flatter and I was always pressing one of the buttons by mistake. This mouse just feels great and if there is a downside to this product, I have not discovered it. I would reccommend this mouse to anyone who is comfortable with it's shape and doesn't mind keeping some batteries on hand.
Rating:
Summary: Nice, but... if you are a gamer don't buy it!!!
Review: I'm a 28 years old gamer, you could say that I play around 3 to 5 hours a week, normally a mouse last me around 1 year (and normally is dust the cause why I change mouse), This mouse begin to malfunction after 2 months. For showdown is very nice, very impressive, very comfort, etc, is all but a 6-dollar mouse, last more than this. I'm sad since I even buy some recharged batteries for this mouse hopping that will last a lot of time. If you don't play maybe this mouse is for you...you will impress your friends...
Rating: 
Summary: Invest in alkaline first
Review: My experience with this Christmas present mouse has been much as detailed by others. Its ergonomics are wonderful (although I prefer Logitech's lower thumb-button to Microsoft's upper), but there are three serious problems with this mouse: 1. Battery life is abysmal. Two fresh alkalines will get you roughly 40 hours of mousing. For me, this is about a week. You can use rechargables, but the Logitech MX700 provides a charging cradle that greatly simplifies this process. 2. The "power saving technology" directly correlates to serious lag. Perhaps they figure that shaving .5 seconds off each movement is a good way to save power. I feel otherwise. The erratic movements make paint or photo-editing software difficult to control. 3. The resolution is iffy, to put it nicely. Again, working in paint programs, I have found myself more than once UNABLE to mouse to a specific pixel. That's just craziness. For the VERY infrequent computer user, it's probably a great mouse. Personally, I quickly realized that the power-vs-accuracy problem was too much for me to deal with and purchased the *wired* Logitech Dual Optical, which thusfar ranks up with the most accurate devices I've ever used.
Rating: 
Summary: Decent product - for one computer ONLY
Review: I purchased this mouse hoping to use it with 4 computers set up through a Switchview controller (all sharing a mouse/monitor/keyboard), but unfortunately it only works when connected directly to the USB port on the computer itself. It may or may not say that in the documentation; I confess that I didn't read it very thoroughly. My USB -> PS/2 converter simply did not work like it does for my USB Intellimouse. I did test it out, however, on my Windows XP Home computer directly and found it to work very well, although I didn't like the thumb groove on the left side of the mouse: it made it slightly too narrow compared to the wired version of the Intellimouse. I didn't notice much difference in movement from the regular Intellimouse, but I didn't try it with video games either. All in all a good product, just don't expect to be able to use it in any way but directly attached to your computer. The smaller wireless Intellimouse comes in USB and PS/2 versions - the PS/2 might be a better choice for Switchview users.
Rating:
Summary: Nice feel, terrible control.
Review: This mouse was trouble for me almost from the very start. First of all, it eats batteries like crazy. Two weeks per pair of good quality alkalines was about average. It did see a lot of usage during that time which put extra strain on the battery life, but they should have lasted much longer. Second, it was very skippy and uneven when moved. The mouse jumped during every movement, even on slow moves on a high contrasting surface. Third, it sometimes took a second or two before it would even respond to my movements. I found the combination these things intolerable and gave it away. It has been passed on at least twice since then. The unfortunate thing is that the mouse has a VERY nice feel in it's shape and buttons. I really liked that feel above any other mouse I've used. But sadly, that was nowhere near enough compensation for the huge drawbacks of it's operation.
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