Product Features:

• 81 keys Standard PC-Keyboard -Windows Keys included. 
• Built-in 14mm optical trackball with 2 standard mouse buttons
• Excellent tactile key stroke attached White Large Print with UV coating.
• High quality rubber membrane key switches.
• Durable for industrial user
• Perfect for POS and Rack Mount users
• USB and PS2 interface available

Specifications:

• Plug and Play. no driver needed for standard keyboard and mouse functionality
• LED indicators for Num Lock, Caps Lock and Scroll Lock 
• FCC Class B approved and CE approved
• RoHS compliance 
• Switch : 5,000,000 life cycles

System Requirements: 

• IBM or compatible PC
• Windows XP, Vista, Windows 7

Product Measurements: 

• Dimension: 12.4"(L) x 5.8"(w) x 0.83"(H) inch