88-Key Mini Windows Keyboard, Embedded Numeric Keypad - Black, USB Connector. The ACK-595 is especially designed for Windows. It has 88/89 keys with embedded numeric keypad and 12 dedicated function keys. It's your everyday keyboard, comfortable, sleek and easy to use. The Adesso Mini Keyboard ACK-595 brings outstanding value with a captivating combination of performance, comfort, and stability.