The Hagstrom Electronics new KE72 unit has the following features: 1.) The KE72 scans 72 individual inputs, which are activated by shorting to a common ground. Note that since these are individual inputs, there is no opportunity for "ghosting" which is inherent in a matrix application. Any input on the KE72 may be programmed to output up to 32 keystrokes when pressed, and up to 16 keystrokes when the input is released. The response of each input may be individually directed to either the PC keyboard input, or to an RS-232 port featured on the unit. Inputs may be individually selected to repeat. The inputs are present on two 2 x 20 headers. These headers have grounds at either end, and 36 inputs in the remaining pins. You may use an IDE cable to plug directly on these headers, or a variety of other connectors. 2.) The KE72 may be mounted in a PCI slot. Although the unit does not use any PCI signals, it will fit in a PCI slot for physical mounting. The KE72 may also be mounted by way of it's corner mounting holes. 3.) The user creates his own configuration file for loading into the KE72. This file is a text only file. Once the configuration file is created, the user runs a supplied program to load the configuration into the KE72. The KE72 may be loaded through the keyboard port (DOS mode) or through it's serial port (DOS or Windows). 4.) The KE72 serial port will also receive ASCII characters on it's serial port and convert them into keystrokes on the PC. 5.) The KE72 has an option for a Mouse/Trackball interface. The KE72-T model emulates a PS2 mouse as well. This allows you to connect a Track Ball or similar device to the KE72 and have it emulate a mouse. Three additional inputs are supplied to emulate the Left, Right, and Middle mouse buttons. The Mouse/Trackball option may be added at a later time to a KE72 with an upgrade kit. -------------------------------------------------- What you need: The KE72 has "PS2 style" mini-DIN connectors for connection to the PC keyboard input and to the keyboard itself. A male to male 6 pin miniDIN cable is required to connect to the PC (our #KE-MM6-mini). With the Mouse/Track ball option, you will also need a KE-MM6-mini to connect from the connector on the KE72 to the mouse input on the PC. If needed, standard adapters may be used to convert the miniDIN to the larger 5 pin DIN connector found on many PCs (Our KE-PS2C and KE-PS2I). We also offer a cable, our KE-TBH3, which connects from the KE72 to a Happ Controls Track ball. KE72 72 input keyboard encoder $119.95 KE72-T KE72 with Mouse/Trackball interface $139.95 KE-MM6-mini 6 pin miniDIN Male/Male Cable, 6 ft. $ 5.95 KE-TBH3 Happ Controls Trackball to KE72 Cable $ 9.95