4GB STICK For Acer Aspire Series 5750Z-4885 5755 5755-6647 5755-6699 5755G 5755G-2414 5755G-6841 5940G 5943G (2 Slots) 5950G 5950G-2638 5951G 5951G-9694 7250 741Z 741Z-5731 7551 7551-7422 7551-7471 7551G-7606 7552G (2 Slots) 7552G-5430 7552G-6436 7560 7560G 7739 7739G 7739G-6676 7739Z 7739Z-4469 7739Z-4605 7741-6456 7741G 7741G-6480 7741Z 7741Z-4433 7741Z-4485 7741Z-4641. SO-DIMM DDR3 NON-ECC PC3-10600 1333MHz RAM Memory. Genuine A-Tech Brand. 4GB STICK SO-DIMM DDR3 NON-ECC PC3-10600 1333MHz RAM Memory Genuine A-Tech Memory Lifetime Warranty Toll Free Technical Support 1-866-557-4527 Designed For Acer Aspire Series. (See Compatibility List Below)