MI-2165 5-KEY USB LASER MOUSE WITH PROGRAMMABLE BUTTON FUNCTION – Minya Collections
Refurbished: DELL M-UAV-DEL8 USB 6 Buttons Laser Mouse-3X72X - Newegg.com
Generic usb laser mouse, laptop size
Amazon.com: 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