Installing An Expansion Card; Back Panel Connectors - Gigabyte Z490 UD AC User Manual

The four memory sockets are divided into two channels and each channel has two memory sockets as following:
Channel A: DDR4_A1, DDR4_A2
Channel B: DDR4_B1, DDR4_B2
Recommanded Dual Channel Memory Configuration:
DDR4_A1
2 Modules - -
4 Modules DS/SS
(SS=Single-Sided, DS=Double-Sided, "- -"=No Memory)
Due to CPU limitations, read the following guidelines before installing the memory in Dual Channel mode.
1. Dual Channel mode cannot be enabled if only one memory module is installed.
2. When enabling Dual Channel mode with two or four memory modules, it is recommended that memory
of the same capacity, brand, speed, and chips be used.
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Installing an Expansion Card

Read the following guidelines before you begin to install an expansion card:
• Make sure the motherboard supports the expansion card. Carefully read the manual that came
with your expansion card.
• Always turn off the computer and unplug the power cord from the power outlet before installing an
expansion card to prevent hardware damage.
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Back Panel Connectors

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USB 2.0/1.1 Port
The USB port supports the USB 2.0/1.1 specification. Use this port for USB devices.
PS/2 Keyboard/Mouse Port
Use this port to connect a PS/2 mouse or keyboard.
SMA Antenna Connectors (1T1R)
Use this connector to connect an antenna.
Tighten the antennas to the antenna connectors and then aim the antennas correctly for better
signal reception.
USB 3.2 Gen 1 Port
The USB 3.2 Gen 1 port supports the USB 3.2 Gen 1 specification and is compatible to the USB 2.0
specification. Use this port for USB devices.
HDMI Port
You can use this port to connect your HDMI-supported monitor. The maximum supported resolution is
4096x2160@30 Hz, but the actual resolutions supported are dependent on the monitor being used.
After installing the HDMI device, make sure to set the default sound playback device to HDMI.
(The item name may differ depending on your operating system.)
j Only for the Z490 UD AC.
DDR4_A2 DDR4_B1 DDR4_B2
DS/SS - - DS/SS
DS/SS DS/SS DS/SS
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The HDMI port supports HDCP 2.3 and Dolby TrueHD and DTS HD Master Audio
formats. It also supports up to 192KHz/16bit 7.1-channel LPCM audio output.
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