聯想連發5款全新筆記本：最高48G記憶體、4K杜比HDR屏 ThinkPad X390筆記本 ThinkPad X390 Yoga ThinkPad T490 ThinkPad T490 ThinkPad T490s ThinkPad T490s ThinkPad T490s ThinkPad T590 ThinkPad T590 ThinkPad T590 ThinkPad T590 來源：IT之家來源：遊民星空
