Chapter 2: Installation Extra USB Headers Four additional USB2.0 headers (USB4/5 and USB6/7) are included on the serverboard. These may be con- nected to provide front side access. A USB cable (not included) is needed for the connection. See the table on the right for pin defi nitions. Serial Ports The COM1 and COM2 serial ports are located under the parallel port. Refer to Figure 2-3 for locations and the table on the right for pin defi nitions. Note: NC indicates no connection. Fan Headers The H8DCE has eight fan headers, which are designated FAN1 through FAN8. Fans are Pulse Width Modu- lated (PWM) and their speed is con- trolled via Thermal Management with a BIOS setting.
See the table on the right for pin defi nitions. Note: when using active heatsinks (those with fans), connect the heatsink fan for CPU1 to the FAN7 header and the heatsink fan for CPU2 to the FAN8 header. JLAN1/2 (Ethernet Ports) Two Gigabit Ethernet ports (desig- nated JLAN1 and JLAN2) are located beside the COM2 port. These Ether- net ports accept RJ45 type cables.
2-11 Extra Universal Serial Bus Headers Pin Defi nitions (USB4/5/6/7) USB2 USB3/4 Pin # Defi nition Pin # Defi nition 1 +5V 1 +5V 2 PO- 2 PO- 3 PO+ 3 PO+ 4 Ground 4 Ground 5 Key 5 No connection Serial Port Pin Defi nitions (COM1/COM2) Pin # Defi nition Pin # Defi nition 1 DCD 6 DSR 2 RXD 7 RTS 3 TXD 8 CTS 4 DTR 9 RI 5 Ground 10 NC Fan Header Pin Defi nitions (FAN1-8) Pin# Defi nition 1 Ground (Black) 2 +12V (Red) 3 Tachometer 4 PWM Control