Asus PRIME B250-PLUS PRIME B250-PLUS USER S MANUAL ENGLISH - Page 14

ASUS PRIME B250-PLUS

1-5

•

In single VGA card mode, use the PCIe 3.0 x16_1 slot (gray) for a PCI Express x16

graphics card to get better performance.

•

We recommend that you provide sufficient power when running CrossFireX™ mode.

•

Connect a chassis fan to the motherboard connector labeled CHA_FAN1/2 when

using multiple graphics cards for better thermal environment.

•

When an M.2 device in PCIe mode is installed onto the M.2_1 socket, PCIe x16_2 slot

only runs at x1 mode.

PCI Express 3.0 x1 slots

This motherboard has two PCI Express 3.0 x1 slots that support PCI Express x1

network cards, SCSI cards, and other cards that comply with the PCI Express

specifications.

IRQ assignments for this motherboard

When using PCI cards on shared slots, ensure that the drivers support “Share IRQ” or that

the cards do not need IRQ assignments. Otherwise, conflicts will arise between the two PCI

groups, making the system unstable and the card inoperable.

A

B

C

D

E

F

G

H

HD Audio Controller

shared

–

–

–

–

–

–

–

XHCI Controller

shared

–

–

–

–

–

–

–

SATA Controller

shared

–

–

–

–

–

–

–

LAN Controller

–

shared

–

–

–

–

–

–

PCIex16_1

shared

–

–

–

–

–

–

–

PCIex16_2

shared

–

–

–

–

–

–

–

PCIex1_1

shared

–

–

–

–

–

–

–

PCIex1_2

–

–

shared

–

–

–

–

–

M.2_1

shared

–

–

–

–

–

–

–

M.2_2

shared

–

–

–

–

–

–

–

ASM1083

–

–

–

shared

–

–

–

–

Section	Page
Safety information	4
About this guide	4
Package contents	6
PRIME B250-PLUS specifications summary	6
Chapter 1: Product introduction	10
Motherboard overview	10
Central Processing Unit (CPU)	17
System memory	18
Chapter 2: BIOS information	20
BIOS setup program	20
EZ Mode	21
Advanced Mode	22
Exit menu	23
Appendix	24
Notices	24

Asus PRIME B250-PLUS PRIME B250-PLUS USER S MANUAL ENGLISH - Page 14

IRQ assignments for this motherboard, PCI Express 3.0 x1 slots

Page 14 highlights