ขอสอบถามเรื่องอัพ Ram โน็ตบ็ค

ASUS X8AIJ VX152D

                                                                                 - Intel Pentium Dual Core T4400 (2.20 GHz)
                                                                                 - Intel GMA 4500M HD
                                                                                 - 3 GB DDR2
                                                                                 - 320 GB 5400 RPM
                                                                                 - 14 inch WXGA (1366x768) LED

                                                                                  สามารถอัพสูงสุดได้กี่ Gb. แล้วใส่ได้กี่ตัว