Wow! I had a 3 year old Microsoft mouse that worked great, but the USB transceiver was a real pain mainly because
of the length of the thing. I broke one of my USB ports when I accidentally banged into the thing one day and on
a laptop one can ill afford to lose a USB connector right?
Anyway, the transceiver on this unit is tiny, it only sticks out maybe a 1/4 of an inch so there's no probability
of you damaging your machine by accident. And, it is extremely responsive, even more than the older design. The
drivers loaded automatically in Windows 7 and I'm back in bidness. Both left and right buttons work as they should,
and the "click" scroll is perfect. Battery life is extended too with an On/Off switch. Works practically on any
surface, the laptop frame, the couch, your jeans! The transceiver does snap into the body of the mouse for travel,
and the only minor complaint I have is that the mouse doesn't turn itself off when the transceiver is nested, you
still have to manually flip the switch to Off. No big deal. And what the heck is Bluetrack? Basically its a broader
optical beam than either laser or optical, works on more surfaces (but not glass), and there is ZERO lag, meaning
its just as responsive if not more so than laser. Don't confuse this with Bluetooth, they are not related.
One word of advice, if you fail to turn off this mouse when not in use it tends to go through batteries like Vegas
hookers through a Shriner's Convention..... always always flip the switch Off when your machine is idle. And it pays
to use a Lithium battery (1) for extended life. Microsoft deserves a slap for claiming "up to 8 month" battery life
(-1 Star) in the product info above. I'm getting about 6-8 weeks on a lithium battery under constant use so I'm
pretty happy.
This 3500 appears to be Microsoft's most reliable mouse. In surveying other reviews I've found the 4000/5000/6000
models all appear to have a problem with the USB transceiver. I don't know if Microsoft has fixed that problem on
those other designs, but you wont find that complaint for the 3500.
Update 7/12/2011: This mouse still works perfectly and is just as responsive as it was on Day 1. It doesn't "squeak",
the mouse clicks are barely audible, but you may find that the rubber casing begins to peel away from the plastic body
over time, this is easily remedied with a drop or two of Superglue. This doesn't affect comfort or performance of the
mouse. And the scroll wheel is still 100% intact and works as it should, I did note problems with the wheel on the
aforementioned 4000-6000 models.