Product Features:

• Built-in 14mm optical trackball
• 2 standard mouse buttons
• Excellent tactile key stroke.
• High quality rubber membrane key switches.
• Permanently attached 10ft cord for industrial requirement
• Durable for industrial user
• Perfect for POS and Rack Mount users
• PS/2 or USB interface (please select one)
• Work with major KVM switches 

Specifications:

• 81 keys - Windows Keys included. 
• 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

 
Keyboard Dimension: 

• Keyboard: 14.6"(L) x 5.43"(W) x 0.9"(H) inch