Buy.com has a Logitech MX 610 Laser Cordless Mouse, USB, PS/2 for $43.99 with Free Shipping. Specs.
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- As the world’s first smart mouse, it extends battery life by syncing with your PC; it sleeps, wakes up, and shuts down when your PC does. n
- The MX 610 also detects and eliminates wireless interference and alerts you when the batteries are low.