Acer Power ST Power ST User Guide - Page 31

Label CPU SOCKET CPUFAN1 DIM1, DIM2 FDD1 IDE 1 IDE 2 IR1 JP1 JP3 PANEL1 PCI1 ~ PCI3 SPEAKER1 USB2 USB3 WOL1 WOM1 COM2 21 Component Micro PGA 478-pin socket for Pentium 4 CPUs Cooling fan for CPU Two 184-pin DDR SDRAM Floppy disk drive connector Primary IDE channel Secondary IDE channel Infrared cable header Clear CMOS jumper BIOS protection jumper Connector for case front panel switches and LED indicators Three 32-bit add-on card slots Speaker connector Front panel USB headers Front panel USB headers Wake On LAN wakeup connector Wake On Modem wakeup connector Com 2 Port Connector Note: The system has two microphone-in jacks (front and rear). However, you cannot use both of them at the same time. By default, your system enables the microphone-in jack in front and disables the one at the back.