MOUS 3-Butt. Wheel Mouse USB/PS2 (P#8711645) 8711645 Category: Siemens Healthcare Low Prices Price match guarantee Guaranteed Fitment. Always the correct part In-House Experts. We know our products Easy Returns. Quick & Hassle Free 8711645 – MOUS 3-Butt. Wheel Mouse USB/PS2 Description Description MOUS 3-Butt. Wheel Mouse USB/PS2