ASROCK Z490M-ITX/ac User Manual

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ODT NOM (B1)
Use this to change ODT (CH B) Auto/Manual settings. e default is [Auto].
ODT PARK (A1)
Congure the memory on die termination resistors' PARK for channel A.
ODT PARK (B1)
Congure the memory on die termination resistors' PARK for channel B.
COMP Setting
RCOMP0: DQ ODT (Read)
Default is 121.
RCOMP1: DQ /CLK Ron (Drive Strength)
Default is 75.
RCOMP2: CMD/CTL Ron (Drive Strength)
Default is 100.
DQ ODT Driving
Adjust ODT Driving for better signal. Default is 60.
DQ Driving
Adjust DQ Driving for better signal. Default is 26.
Command Driving
Adjust Command Driving for better signal. Default is 20.
Control Driving
Adjust Control Driving for better signal. Default is 20.
Clock Driving
Adjust Clock Driving for better signal. Default is 26.
DQ Slew Rate
Adjust DQ Slew Rate for better signal. Default is 59.
Command Slew Rate
Adjust Command Slew Rate for better signal. Default is 53 for IN, 89 for 2N.

ASROCK Z490M-ITX/ac Specifications

General

HDMI version	1.4
PS/2 ports quantity	1
USB 2.0 ports quantity	USB 2.0 ports have a data transmission speed of 480 Mbps, and are backwards compatible with USB 1.1 ports. You can connect all kinds of peripheral devices to them.
Ethernet LAN (RJ-45) ports	2
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity	4
USB 3.2 Gen 1 (3.1 Gen 1) Type-C ports quantity	0
RGB LED pin header	Yes
LAN controller	Dragon RTL8125BG, Intel I219-V
Wi-Fi standards	802.11a, 802.11b, 802.11g, Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac)
Bluetooth version	4.2
Ethernet interface type	2.5 Gigabit Ethernet, Gigabit Ethernet
Audio chip	Realtek ALC1200
Component for	PC
Motherboard chipset	Intel Z490
PC health monitoring	FAN, Temperature, Voltage
Audio output channels	7.1 channels
Motherboard form factor	mini ITX
Motherboard chipset family	Intel
Windows operating systems supported	Windows 10
OpenGL version	4.5
DirectX version	12.0
Maximum resolution	4096 x 2304 pixels
Parallel processing technology support	Not supported
Memory channels	Dual-channel
Memory slots type	DIMM
Supported memory types	DDR4-SDRAM
Maximum internal memory	64 GB
Supported memory clock speeds	2133, 2400, 2666, 2800, 2933, 3200, 3600, 3733, 3800, 3866, 4000, 4133, 4266, 4333, 4400 MHz
Cables included	SATA
BIOS type	UEFI AMI
BIOS memory size	128 Mbit
System Management BIOS (SMBIOS) version	2.7
RAID levels	0, 1, 5, 10
Supported storage drive types	HDD & SSD
Supported storage drive interfaces	SATA III
Compatible processor series	Intel Celeron, Intel Core i3, Intel Core i5, Intel Core i7, Intel Core i9, Intel Pentium

Weight and Dimensions

Width	170 mm