The MM002-xx-EU module can be soldered on another board like a SMD component while the MK002-xx-EU USB key is based on MM002-xx-EU modem. This module could be plugged into a computer.
Frequency: 868 MHz
Chips: ARM Cortex M3 + SX1272
Maximum output power: +14 dBm (+20dBm as option)
Price: not available