・ The KB-3920, known as a "legendary membrane keyboard" ・ This keyboard was included with NEC's Express5800 server. ・ It's an OEM product, so there's no branding, but it's made by Chicony, a Taiwanese manufacturer. ・ It's now discontinued, and the opportunity to purchase a new one will likely decrease in the future. ・ It features "cylindrical step sculpture" which naturally fits the movement of your fingers, aids in accurate typing, and reduces fatigue even after long hours of use. (The keycaps are slightly concave and have a curved structure when viewed from the side.) ・ Key layout: Japanese layout (JIS layout) ・ Number of keys: 109 keys ・ Connection method: PS/2 connector ・ Key switch: Membrane #Chicony #Perixx #PERIBOARD #JapaneseLayout