The BT-100RS cash drawer serial port driver box provides a serial port to connect the cash drawer and the computer, that is to say, through it, the cash drawer can be opened directly by sending commands from the computer without going through the printer (or customer display). At the same time, this driver box has abandoned the disadvantage of the old serial port driver box that requires an additional power adapter, and has another USB plug to take power directly, which is more convenient to use. At the same time, one computer can connect multiple BT-100RS drive boxes to control multiple cash drawers. The cash drawer is directly connected to the computer, saving the printer; The computer or cash register does not need to install the driver, as long as the port is set, it can be used; Support hot plug, hot dial, plug and play; No need to set COM parameters; There is no need for cash drawer instructions, just write any data to the serial port to open the cash drawer. Product name: cash drawer serial port driver box Model: BT-100RS Material: plastic colour: black Package Contents: 2 x cash drawer serial port driver box Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.