What:
HP Compaq Pressario CQ56-103EG XH187EA # ABD (name and number agree) with already standard 2GB Kingston module. Check the manufacturer's website and at Kingston took me only to dealers where the module loosely three times Costs. For the good price and the right product specification, I decided to take the risk and buy the 2GB module for about 20. 2GB were too few and with 4GB everything is going very well again. The ordered is identical to the existing apparently not 100% but both are stable together.
Installation:
Simple - Grounding Band Dress (3 to be excellent value), battery out, screw on laptop, according to introduce video on Youtube the module at an angle from the top and push down, screw, battery in, turn on your computer and use.
For 20 I need me later buy a new computer. An upgrade that pays off.
Have fun during installation!