E-gate usb dongle Se Tool / Cruiser / S-card is a universal device to connect e-gate smart card which protects gsm service boxes - Se Tool, Cruiser, Infinity Box, S-Card and Thunderstorm. It allows you to seperate software from a box. For example if your box is damaged you can check if smart card is working and just send only a box for replacement or repair. Smart card can work with our dongle altogether and you can use software with another universal box.