Description: Handheld USB keyboard, its six buttons can be defined for any key or button on the standard computer keyboard combination via setting software, a string, the mouse function, string end + any of the key, and other functions. Product for USB interface standard HID keyboard devices, can run on Windows, Linux, MAC. The keys can be changed by setting software keys, the software only support Windows. If there is need for using in Linux and MAC , you need to set keys in the Windows system, then it can be used in Linux, MAC computer , easy and convenient. The line length: 2m, users can buy their own good quality USB extension length. CE/ FCC/ ROHS certification, unite states patent, pass European patent testing certification. Used in playing games, controlling instruments, image acquisition, multimedia teaching and so on. To define complex shortcuts in PS. Common PS shortcuts to demonstrate in the application showed as below: [Ctrl] + [ ] + [N] (From the dialog box to create a new layer ) [Ctrl] + [Alt] + [ ] + [N] (In the default option to create a new layer ) [Ctrl] + [ ] + [E] (Merge visible) [Ctrl] + [Alt] + [E] (Chop or seal connection layer ) [Ctrl] + [Alt] + [ ] + [E] (Chop visible) [Ctrl] + [Alt] + [L] ( Threshold (bitmap mode) ) [Ctrl] + [Alt] + [M] (Multiply) [Ctrl] + [Alt] + [J] (to color sponge tool ) [Ctrl] + [Alt] + [V] (Among the dodge/burn tool ) [Ctrl] + [Alt] + [Z] (Highlights the dodge/burn tool ) Specification: Material: Plastic Size: 160 x 120 x 30mm/6.3 x 4.7 x 1.2inch Cable Length: 2M Package Includes: 1 Piece Handle Keyboard 1 Piece CD