System Requirements:USB 2.0 ConnectivityWorks with Windows® 8, 7, Vista (all versions), XP, XP 64-bit & Mac OS X 10.6.6 or later (requires Intel processor for Mac)Product Includes:Mouse with Gold-plated USB Connector5X Removable 6g WeightsWeight Storage Canister2X Extra Palm Rests2X Extra Pinkie Res