15
4 * 9 Communications Port (COM1)
5 * 6 Sound Card (sometimes LPT2)
6 * 11 Floppy Disk Controller
7 * 7 Printer Port (LPT1)
8 N/A System CMOS/Real Time Clock
9 * 10 ACPI Mode when enabled
10 * 3 IRQ Holder for PCI Steering
11 * 2 IRQ Holder for PCI Steering
12 * 4 PS/2 Compatible Mouse Port
13 N/A Numeric Data Processor
14 * 5 Primary IDE Channel
15 * 1 Secondary IDE Channel
* These IRQs are usually available for ISA or PCI devices.
2-5-3 PCI Express Slot
The H55 Express chipset based motherboard series offer two PCI-Express2.0 x16
graphics slots with PE2 being PCI Express 2.0 x16@16 lane slot while PE3 being PCI
Express 2.0 x16@ 4 lane slot. These two graphics slots are fully compatible with the
latest AMD CrossFireX Technology to guarantee the fully operational Multi-GP Us
graphics function and avoid the possible installation error. One PCI Express x1 I/O
slot and two 32-bit PCI slots guarantee the rich connectivity for the I/O of peripherals.
And theH55 motherboard is embedded with a mini-PCIE slot that supports WiFi card.
PCI-E2.0 x16by16 LaneSlot
PCI-E2.0 x16by4 Lane Slot
PCI
slots
PCI-E2.0 x1 slot
MINIPCI-E slot