second generation models have permanently integrated interface boards, so a customer needed to choose one of these interface options: USB (with power delivered from separate power supply) + PoweredUSB, RS-232 or RS-485. Additionally, there are models with a D instead of a T. This denotes a different warranty service ("Depot repair" instead of "IOR 24x7"). This separation existed only in the first generation of 4610 printers. Some models, especially those that IBM marks for "fiscal use" feature paper journaling in addition to electronic journaling (optionally with CompactFlash-cards) or an RS-232 auditing port. These models include: KR3 / KD3, KR5 / KD5, KC4, KC5, FV5, GR3 / GB3 / GE3, GR5 / GB5. Some of these models have a power supply integrated. Not everywhere, where cash registers and receipt printers are hardware-fiscalized, IBM provided its own fiscal modules, so third-parties were required to do so, using "fiscal-ready" or non-fiscal versions of 4610 printers. No three-station model was developed in the second generation of 4610 printers, as many countries, requiring hardware fiscalization of cash registers and receipt printers or paper journaling, already transitioned to electronic journaling. Interface Printers attached using RS-485 are supplied with 35V from the data cable. When using RS-232 or USB (depending on model and interface card), a separate 24V connected is used, either using a PoweredUSB-connection cable plugged into the point-of-sale system or using an external power brick. Note that the PoweredUSB-Cable does not transmit data and is used for power only. Interface speeds are as follows: RS-232: 9600 and 19200 bit/s, 115200 bit/s for Tx8 and Tx9 RS-485: 185.5 kbit/s USB: up to 12 Mbit/s IBM provides extensive documentation Users guide for a large range of 4610 printers including programming information (Retrieved: 2018-01-06 16:31+00) for interfacing with the printer family programatically. Generally, when connecting the printer via RS-232 or RS-485, the commands are sent in binary along with the text. It is therefor possible to use the printers in different applications. Interface Examples The following examples assume a Linux-computer with the printer connected via a USB to serial adapter known to the system as /dev/ttyUSB0 with the port configured for the desired baud rate. Printing text on the thermal printer is as easy as writing to the device: $ echo "Hello World" > /dev/ttyUSB0 Commands are sent as binary. This will cause the paper in the thermal printer to be cut: $ echo -e -n "\x0c" >