Waterproof membrane switch, Service life 12 million times.POS Programmable Keyboard supports firmware online upgrades.The software adaptation platform supports USB programming for Windows ME/9X/2K/XP/7/8/10/11.All data can be retained for EEPROM without additional battery.With PS/2 keyboard expansion port.POS Programmable Keyboard with Electronic Lock and Magstripe Card Reader optional.
