Ublox NEOGMV2 Flight Controller GPS Module EEPROM

What can I do more with a GPS Module that uses EEPROM?

What's the difference between these items?

http://www.ebay.com/itm/Ublox-GY-NEO6MV2-Flight-Controller-GPS-Module-For-Arduino-EEPROM-MWC-APM-2-5-/251619834613?

http://www.ebay.com/itm/390631684988?_trksid=p2055119.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT

They are pretty much identical components with different descriptions. They both have EEPROMS.

NEO-6M is ROM type GPS module, has no permanent storage for user setting. EEPROM is for non-volatile storage of user configuration settings.