Compatible with Portables as :

Acer Aspire E5-511 Series
Acer Aspire E5-511G Series
Acer Aspire E5-511P Series
Acer Aspire E5-521 Series
Acer Aspire E5-551 Series
Acer Aspire E5-551G Series 
Acer Aspire E5-571 Series
Acer Aspire E5-571G Series 
Acer Aspire E5-572 Series
Acer Aspire E5-572G Series 
Acer Aspire V3-532 Series
Acer Aspire V3-532G Series 
Acer Aspire V3-572 Series
Acer Aspire V3-572G Series 
Acer Aspire V3-572G-757X

Acer Extensive 2500 Series
Acer Extensive 2509 Series
Acer Extensive 2510G Series
Acer Extensive EX2500 Series
Acer Extensive EX2509 Series
Acer Extensive EX2510G Series

Acer Travelmate P256 Series
Acer Travelmate P256-M Series
Acer Travelmate P256-MG1 Series