ioapic0 <Version 2.0> irqs 0-23 on motherboard
usb0: USB revision 1.0
usb1: USB revision 1.0
sio0: <16550A-compatible COM port> port 0x3f8-0x3ff irq 4 flags 0x10 on acpi0
sio0: type 16550A
sio1: configured irq 3 not in bitmap of probed irqs 0
sio1: port may not be enabled