Universal USB QWERTY US English Full-size (100%) Numeric keypad Windows keys Grey Durable, reliable, high quality and easy to use - the standard PC keyboard for the most demanding requirements. Timeless design. With FTSC technology to give reliable service.- PS/2-or USB Interface.- High-quality keyboard for professional users.- Membrane contact switches with rubber-mat technology for individual use.- Precision switching.- Keycap symbols are wear-resistant and easy to clean.- Linear key action.- Reliability:MCBF =1 x 10 9 operations;MTBF >80,000 hours.- Individual keys have long service life: >50 million operations. Keyboard Certification cURus, VDE, GS, c-tick, VCCI, CE, FCC, BSMI Purpose PC/Server Windows keys Yes Keyboard keys operating life 50 million characters Keyboard number of keys 104 Numeric keypad Yes Keyboard form factor Full-size (100%) Keyboard language US English Keyboard layout QWERTY Device interface USB Connectivity technology Wired Recommended usage Universal Design P