Interface type is to point to the keyboard hp envy 14-1095la laptop keyboard and the computer connection between host interface way or type. In the present market condition common keyboard interface has three: old AT interface, PS / 2 interface and USB interface. Old AT interface, commonly known as the big, now has basic knocked out, so no introduction.
 
PS / 2 interface
The first appeared in the IBM PS / 2 machines, and have the name. This is a kind of mouse and keyboard hp envy 14-1099br laptop keyboard special interface, it is a kind of 6 needle circular interface, but just use the keyboard four of these data transmission and power supply needle, the rest two feet is empty. PS / 2 interface transmission rate than the COM interface some slightly faster, and is the main board ATX standard interface, is the most widely used one of keyboard interface.
 
The keyboard hp envy 14-1099ee laptop keyboard and mouse can use the PS / 2 interface, but according to the PC '99 color standard, the mouse usually take green light interface, the keyboard takes up purple interface. Although from the above definition stitches the working principle of the same seems both, but the two interfaces still can't mix put, this is in the computer by their internal different signal definition of the decision.
 
USB interface
USB's full name is the Universal Serial Bus, USB hp envy 14-1100er laptop keyboard support hot swaps, plug and play advantage, so USB interface has become the main interface of MP3 way. USB has two norms, which USB1.1 and USB2.0.
 
PS / 2 interface and USB interface using keyboard in difference, because the USB interface support hot swaps, therefore USB interface keyboard in use may slightly convenient some. But underlying hardware computer hp envy 14-1100el laptop keyboard to PS / 2 interface support some more perfect, so if the computer meet some fault, use the PS / 2 interface keyboard compatibility better. Mainstream keyboard both use PS / 2 interface and use a USB interface, when buying, need to choose according to need. All kinds of keyboard interface between the adapter can through the specific or turn wiring achieve conversion, such as USB turn PS / 2 through first.