Genuine Dell K251D 6-Button Grey Gray Silver Black USB Scroll Wheel Optical Laser Mouse, Works Perfectly With Windows 95, 98, NT 4.0, 2000, XP, Vista, and Windows 7, and Will Work With ANY Computer System That Supports USB Connectors, Compatible Part Numbers: M534D, Y357C, Model Number: M-UAV-DEL8

This is a very nice mouse. I got to test one on a computer I repaired, and liked it so much I bought one. This mouse has a more squarish feel, more defined edges on each aide, so feels larger than most. I like that! Works well, semi smooth mouse wheel, no noise minor resistance, laser light tracking. Has a button behind the center wheel, so you can increase the tracking speed of the mouse pointer. Unique! The button works on PC and Mac. Just click it, and blue LED lights indicate the cursor track seed on screen. Silver color with black accents, so also matches my computer and keyboard color if that matters to you. Worth the $15 or so for it. Plus is a brand name, DELL. Is standard large usb connector, with plenty of cord!

Works great with my older Dell XPS desktop. Not fancy but does the job

This is a simple mouse that works great and has a long lifetime. Good value!

The reason for 5 stars is that the price/performance of the mouse is outstanding. The mouse action is smooth. The laser tracking works on my desktop, which my last laser mouse did not forcing me to use a mouse pad. The scroll wheel has the clickey feel that I like. The hand position on the mouse feels natural. There is a button on the top that sets the scroll speed to one of 4 presets, position number 2 works perfect for me allowing me to scroll across my two screens in the limited amount of space that I have.The mouse has two buttons on the side that act as forward/back buttons. the buttons are small and clicking them is something new to me as my last mouse did not have them. At the moment using these feels unnatural, in time I may get used to them.My last mouse was a cheapish logitech that I liked very much (aside from the mouse pad thing.) The logitech mouse worked fantastically for about 13 years (as best I can recall.) I don't know if this new mouse will be as long lasting.

I bought this just to have on the shelf because this is the sort of thing you only need when you need it. I plugged it in to my primary Win7 PC and used for a couple of days. I normally use an ergonomic vertical mouse with a few more programmed buttons, so this mouse never had a chance to become my full time driver. But it is a serviceable basic mouse, and it sufficed for my testing. I put it back in the bag and set it aside for the next time I needed a mouse for some generic use.

I've been using this type of Dell mouse for many years now. It's biggest value point for me is the ability to change the mouse speed right from the button on the top. This is important what creating drawings of graphics and you need to slowly creep up on an intersection or attachment point. I hope this mouse is around for a long time!

Needed this mouse for my laptop and this one is ideal. I hope it lasts a while.

Love this mouse! Glad I decided to keep it at a great price!