Perixx 11062 PERIBOARD-514PLUS, Wired Keyboard with Trackball, 14.57x5.39x1.02" Dimension, 2x PS2 Connector with 1 USB Adapter 14.57x5.39x1.02 Inch Dimension (370x137x26mm) 1.8 Meter Cable and 2xPS2 Connector with 1xUSB Adapter for both keyboard and mouse Function Fit with 19" Rack Drawer & Kiosk Application (Compatible with Cherry G84-4400 Design) If your alphabet typing appear with numbers (like J,K,L,etc), you may press Fn + Num Lock two keys together to enable or disable the number lock function Logitech Microsoft adesso cherry razer 19" rack