B-M2MEM-PACK1 is a serial memory pack containing five different nonvolatile serial memory add-on boards. These boards can be connected to specific Nucleo-144 boards using the M.2 Key A serial memory connector and allow the development of applications requiring an external flash memory. The boards contain serial flash memories from different memory vendors, covering a wide range of operating voltages and maximum clock frequencies. They offer multiple serial bus schemes and memory interfaces. Each board offers a red and green LED light, an I2C identification EEPROM for software detection, and one serial flash memory IC. The latter is powered by an LDO, controlled by the MCU of the connected Nucleo-144 board. All boards contain empty sockets for customization in 8-pin SOP or 24-pin BGA device footprints.