Acer TravelMate 4220 TravelMate 4520/4220, Extensa 4420/4120 Service Guide - Page 129

Video Interface Item Graphics controller Package Video memory Memory bus width Memory type Compatibility Specification ATI Mobility Radeon X2300 HD Micro-FCBGA 465-pin 256 MB 128-bit Graphics Double Data Rate 3 (GDDR3) T Microsoft DirectX 9.0c T PowerPlay 6.0 Audio Interface Item Audio controller Amplifier Internal speakers Internal microphone Supported audio technologies Specification Realtek ALC883 Azalia G1431, G1412, and G1442 T One speaker grill with 2W L/R stereo speakers T One 2.5W subwoofer Two built-in stereo microphones T Intel HD Audio (integrated in the Intel ICH7-M) T Dolby SurroundSound T Dolby Home Theater T S/PDIF T MS-Sound USB Interface Item USB controller USB specification Number of USB port Specification Integrated in the Intel ICH7-M 2.0 4 (two each on the left and right sides) Keyboard Item Keyboard controller Keyboard layout Features Simultaneously support for internal and external keyboard Specification Winbond WPC8768L 88-/89-/93-key keyboard with international language support T Embedded numeric keypad T Inverted "T" cursor keys, 12 function keys, Windows® key, independent US and Euro dollar sign keys, and hotkey controls T Acer MediaTouch keys: play/pause, stop, previous, next, and record keys T Easy-launch keys: WLAN, Internet, email, Bluetooth, Acer Empowering, and Acer Arcade Yes Appendix C 119