Lenovo delivers cost-effective, reliable, and scalable Data Center Solutions by combining industry-leading technology and the world's best software-defined offerings with a suite of managed services covering the entire technology lifecycle. • Lenovo Preferred Pro II 4X30M86879 • Switch Type Rubber: Dome • Key Rollover: None • Key Pitch: 0.7"/19 mm • Dedicated Multimedia Keys: No • Dedicated Macro Keys: None • On-the-Fly Recording: No • Windows Lock Key: No • Keystroke Life Span: 10 Million • Connection Type: Wired • Host Connection: USB-A • USB: None • Audio I/O: None • Full-Functionality OS Support: Windows • Backlighting : None • Onboard Memory: None • Built-In Control Device: None • Wrist Rest: None • Operating Temperature: 50 to 104°F / 10 to 40°C • Operating Humidity: 8 to 80% • Cable Length: 17.8" / 453 mm