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Question: Does this mouse have a storage compartment for the USB receiver?  The 325 does and the 560 does not, so I'm not sure where this falls.
Document: I'm not a hardcore PC gamer, but I do play games on my computer often, and I use it every single day. This bad boy is comfortable to use, the batteries last forever (I've had it for two years and am still using the batteries that came with it), and it even has a useful storage compartment for the USB inside the mouse for when you travel. This mouse if fantastic in every way. I definitely recommend it if you want to keep the same mouse for years to come.
There's also a storage compartment behind the battery door to stow the USB receiver for travel.Also, the on/off switch on the bottom of the mouse really helps in conserving battery juice. I don't think I've changed the batteries once since I bought it by using the "off" switch on a nightly basis.
Although initially a little tricky to set up, what with additional installations necessary from the Logitech website in order to use all the buttons properly, this mouse surprised me with its phenomenal handling and ease of use. You can use it on almost any solid colored surface, be it the carpet or a leather sofa. The buttons respond well, and the USB receiver is small and conveniently sized. Additionally, there is a storage compartment for the receiver underneath the mouse which helps with transportation.
Doesn't get much better than a good Logitech mouse. Sure you have designer companies making ridiculous products out there but you pay 4X the price and Logitech's are just as solid (or better) from a reliability standpoint. This comes with one of Logitech's universal dongle things that will pair simultaneously with keyboards and what not. It also has a great little storage compartment inside for travel (brilliant design). But you probably know all that from product description.
I'm still using the batteries it came with months later. And I have left it on accidentally overnight a couple of times. The buttons are precise, the grip feels greats, and the compartment houses the transmitter with the batteries for easy storage. I haven't had a PC yet that didn't accept this mouse, just plug in and play.
You can use either battery slip to operate the M510 on one cell. If you use rechargeable batteries, this will likely increase battery weight; so if you want to add a lot of weight to the mouse, use two rechargeable AAs in place of the disposable batteries.There is a storage slot alongside the battery compartment, under the battery cover, for the Unifying Receiver.
I bought this as a replacement for a mouse that had taken too many falls off the recliner. The problem with this mouse is that the laser is not on the center line, which makes using it on non-flat surfaces (say, the arm of a recliner) extremely difficult. I'm sure it's a fine mouse, but you should definitely pass up the M510 if you're looking to use it on the arm of a recliner.
I found it simple to use and ergonomically well designed. The storage space in the battery compartment for the unifying receiver makes it safe and easy for transport.
I replaced an old Logitech wireless mouse with this one. This mouse definitely does the Logitech brand a lot of justice. The mouse itself is your basic high quality no frills wireless optical with minimal bells and whistles. No extra buttons or weird design to get in the way. Fits very comfortably in the hand, flows well, etc. The receiver is very compact and easy to use for a desktop or laptop computer (with a handy storage compartment inside the mouse itself), and the battery life is outright astonishing.
The bottom has some smooth pads for ease of sliding, an on-off button which is colored to quickly make it easy to tell which position it is in. When you remove the battery cover, there is a slot for you to slide your USB receiver for storage.The mouse has a sturdy feel to it and the only noise it makes when shaken is the scroll wheel.
Answer: Yes it does, inside the battery compartment.