RAM upgrade - difference models - Pavilion Power 15 CB

[anhtuanmai]

Hello,
I want to add a second RAM to my Pavilion Power 15 CB.
At the moment, I found some options as below:

Kingston HP26D4S9S8MHF-8 8GB                      (like new)

Kingston HP26D4S9S8MD-8 8GB                        (like new)

Kingston HP26D4S9S8ME-8 8GB                         (like new)
Kingston ValueRAM KVR26S19S8/8 8GB           (new)

Crucial CT8G4SFS8266 8GB                                   (new)

(They are all 2666MHz)
I wonder which model should I choose for my computer?
What is the differences between Kingston MHF/MD/ME/ValueRam?

Thank you so much.
Best regards.
Anh Tuan

[erico]

Can you identify your notebook with its complete product name instead of what you have used?

" Pavilion Power 15 CB" is not a complete product name.

Using the product number, found in the tiny letters on the bottom as ProdID will  be OK as well.

The KIngston memory website explains the differences between their memory models. I won't duplicate their information here.

[anhtuanmai]

The laptop model is: HP Pavilion Power - 15-cb015nf
Thank you.