NEW GENUINE OEM HP BLACK SILVER PS2 OPTICAL SCROLL WHEEL 3 BUTTON COMPUTER MOUSE | eBay
Amazon.com: PS-2 Optical Mouse
StarTech.com USB to PS/2 Adapter - Keyboard and Mouse - Keyboard Adapter - USBPS2PC - Cable Connectors - CDW.com
Silver-Storm Washable Medical Grade 1000dpi Optical Mouse with Scroll Wheel- Dishwasher Safe, Antimicrobial (PS2) (Black) | STM042P by Seal Shield from WetKeys Washable and Waterproof Keyboards