Silver-Storm Washable Medical Grade 1000dpi Optical Mouse with Scroll Wheel- Dishwasher Safe, Antimicrobial (PS2) (White) | STWM042P by Seal Shield from WetKeys Washable and Waterproof Keyboards
What is PS/2?
Professional-grade Ergonomic Optical Waterproof Mouse with 3-button Scroll ( PS2 ONLY) (Black) | OMWK0C01PS2-BK by WetKeys Washable and Waterproof Keyboards