SELECT pci_express FROM table_name_11 WHERE memory = "ddr 266/333/400 registered/ecc" AND sound = "enhanced ac'97 2.3"
PCI-Express mana yang memiliki DDR 266/333/400 memori terdaftar/ECC dan disempurnakan suara AC'97 2.3?
CREATE TABLE table_name_11 (pci_express VARCHAR, memory VARCHAR, sound VARCHAR)