Biostar B450NH User Manual

Chapter 2: Hardware installaon | 15
B450NH
Clear CMOS Procedures:
1. Remove AC power line.
2. Set the jumper to “Pin 1-2 short”, you can use a metal object like a screwdriver to touch
the two pins.
3. Wait for ve seconds.
4. Aer clearing the CMOS values, be sure the jumper is “Pin 1-2 open”.
5. Power on the AC.
6. Load Opmal Defaults and save sengs in CMOS.
2.7 Headers & Connectors
ATXPWR1: ATX Power Source Connector
For beer compability, we recommend to use a standard ATX 24-pin power supply for this
connector. Make sure to nd the correct orientaon before plugging the connector.
Pin Assignment Pin Assignment
13 +3.3V 1 +3.3V
14 -12V 2 +3.3V
15 Ground 3 Ground
16 PS_ON 4 +5V
17 Ground 5 Ground
18 Ground 6 +5V
19 Ground 7 Ground
20 NC 8 PW_OK
21 +5V 9 Standby Voltage+5V
22 +5V 10 +12V
23 +5V 11 +12V
24 Ground 12 +3.3V
ATXPWR2: ATX Power Source Connector
This connector will provide +12V to CPU power circuit.
Pin Assignment
1 +12V
2 +12V
3 Ground
4 Ground
Note
»
 Beforeyoupoweronthesystem,pleasemakesurethatbothATXPWR1andATXPWR2connectors
havebeenplugged-in.
»
 Insucientpowersuppliedtothesystemmayresultininstabilityortheperipheralsnotfunconing
properly.UseofaPSUwithahigherpoweroutputisrecommendedwhenconguringasystemwith
morepower-consumingdevices.

Biostar B450NH Specifications

General

Processor socket	Socket AM4
Processor manufacturer	AMD
Compatible processor series	AMD Athlon, AMD Ryzen 3, AMD Ryzen 3 2nd Gen, AMD Ryzen 3 3rd Gen, AMD Ryzen 5, AMD Ryzen 5 2nd Gen, AMD Ryzen 5 3rd Gen, AMD Ryzen 5 5th Gen, AMD Ryzen 7, AMD Ryzen 7 2nd Gen, AMD Ryzen 7 3rd Gen, AMD Ryzen 7 5th Gen, AMD Ryzen 9 3rd Gen, AMD Ryzen 9 5th Gen
Processor thermal power (max)	105 W
Maximum number of SMP processors	1
Memory channels	Dual-channel
Memory slots type	DIMM
Number of memory slots	2
Supported memory types	DDR4-SDRAM
Maximum internal memory	64 GB
Supported memory clock speeds	1866, 2133, 2400, 2667 MHz
RAID levels	0, 1, 10
Supported storage drive interfaces	M.2, NVMe, PCI Express 3.0, SATA III
HDCP	Yes
DirectX version	12.0
Parallel processing technology support	Not supported
Number of SATA III connectors	4
USB 3.2 Gen 2 (3.1 Gen 2) connectors	0
Headphone outputs	3
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.
Wi-Fi	No
LAN controller	Realtek RTL8111H
Ethernet interface type	Gigabit Ethernet
BIOS type	UEFI
Audio chip	Realtek ALC887
Component for	PC
Motherboard chipset	AMD B450
Audio output channels	7.1 channels
Motherboard form factor	mini ATX
Windows operating systems supported	Windows 10 x64, Windows 11 x64, Windows 7 x64

Weight and Dimensions

Width	170 mm