A-TECH 4GB STICK Toshiba Satellite R R830-1CF R830-10D R830-10G R830-10F R830-11C R830-12N R830-136 R830-13D R830-142 R830-143 R830-146 SO-DIMM DDR3 NON-ECC PC3-10600 1333MHz RAM Memory Genuine 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 Toshiba Satellite R Series. (See Compatibility List Below)