AddOn AA160D3N-4G x1 Dell A5649222 Compatible 4GB DDR3-1600MHz Unbuffered Dual Rank 1.5V 240-pin CL11 UDIMM PS/2 Keyboard/Mouse to USB Converter Adapter If you have a MacBook

If you have a MacBook or other white mini-displayport ready device

you can count on it being the best available memory for your system

Independent switching of KVM

Hot Keys automatically size

AddOn AA160D3N-4G x1 Dell A5649222 Compatible 4GB DDR3-1600MHz Unbuffered Dual Rank 1.5V 240-pin CL11 UDIMM PS/2 Keyboard/Mouse to USB Converter Adapter If you have a MacBookThis Dell A5649222 compatible 4GB DDR3 1600MHz 1. 5V DIMM is 100% guaranteed to be compatible with your system and to work right the first time. Adding additional memory is the best way to increase the performance of your system. Our memory is built to strict JEDEC standards to meet or exceed the Tier 1 OEM's factory requirements. Our products are also guaranteed by the Magnuson Moss Warranty Act to not affect or void OEM warranties. DIMM 4 GB memory