Recenze ASRock MB Sc AM4 B450 STEEL LEGEND, AMD Promontory B450, 4xDDR4, HDMI, DP

- AMD AM4 Socket
- Digi Power design
- 6 Power Phase design

- Dual Channel DDR4 Memory Technology
- 4 x DDR4 DIMM Slots
- AMD Ryzen series CPUs (Matisse) support DDR4 3200 / 2933 / 2667 / 2400 / 2133 ECC & non-ECC, un-buffered memory
- AMD Ryzen series CPUs (Pinnacle Ridge) support DDR4 3533+(OC) / 3200(OC) / 2933(OC) / 2667 / 2400 / 2133 ECC & non-ECC, un-buffered memory
- AMD Ryzen series CPUs (Picasso) support DDR4 2933 / 2667 / 2400 / 2133 non-ECC, un-buffered memory
- AMD Ryzen series CPUs (Summit Ridge) support DDR4 3466+(OC) / 3200(OC) / 2933(OC) / 2667 / 2400 / 2133 ECC & non-ECC, un-buffered memory
- AMD Ryzen series CPUs (Raven Ridge) support DDR4 3466+(OC) / 3200(OC) / 2933 / 2667 / 2400 / 2133 non-ECC, un-buffered memory*
- Max. capacity of system memory: 64GB
- Supports Extreme Memory Profile (XMP) memory modules
- 15µ Gold Contact in DIMM Slots

- Integrated AMD Radeon™ Vega Series Graphics in Ryzen Series APU
- DirectX 12, Pixel Shader 5.0
- Shared memory default 2GB. Max Shared memory supports up to 16GB.
- Dual graphics output: Support HDMI and DisplayPort 1.2 ports by independent display controllers
- Supports HDMI 1.4 with max. resolution up to 4K x 2K (4096x2160) @ 24Hz / (3840x2160) @ 30Hz
- Supports DisplayPort 1.2 with max. resolution up to 4K x 2K (4096x2160) @ 60Hz
- Supports Auto Lip Sync, Deep Color (12bpc), xvYCC and HBR (High Bit Rate Audio) with HDMI 1.4 Port (Compliant HDMI monitor is required)
- Supports HDCP 1.4 with HDMI 1.4 and DisplayPort 1.2 Ports
- Supports 4K Ultra HD (UHD) playback with HDMI 1.4 and DisplayPort 1.2 Ports

*Actual support may vary by CPU

The Max shared memory 16GB requires 32GB system memory installed.

AMD Ryzen series CPUs (Matisse, Summit Ridge and Pinnacle Ridge)
- 2 x PCI Express 3.0 x16 Slots (PCIE1: x16 mode; PCIE4: x4 mode)
AMD Ryzen series CPUs (Picasso, Raven Ridge)
- 2 x PCI Express 3.0 x16 Slots (PCIE1: x8 mode; PCIE4: x4 mode) (If you use Athlon 2xxGE series APU, PCIE1 slot will run at x4 mode.)
AMD Athlon series CPUs
- 2 x PCI Express 3.0 x16 Slots (PCIE1: x4 mode; PCIE4: x2 mode)

- 4 x PCI Express 2.0 x1 Slots
- Supports AMD Quad CrossFireX™ and CrossFireX™

*Supports NVMe SSD as boot disks
If M2_1 is occupied, PCIE4 will be disabled.

This feature is only supported with Ryzen Series CPUs (Matisse, Summit Ridge, Pinnacle Ridge, Picasso and Raven Ridge).

- 4 x SATA3 6.0 Gb/s Connectors, support RAID (RAID 0, RAID 1 and RAID 10), NCQ, AHCI and Hot Plug
- 2 x SATA3 6.0 Gb/s Connectors by ASMedia ASM1061, support NCQ, AHCI and Hot Plug
- 1 x Ultra M.2 Socket (M2_1), supports M Key type 2230/2242/2260/2280 M.2 PCI Express module up to Gen3 x4 (32 Gb/s) (with Matisse, Picasso, Summit Ridge, Raven Ridge and Pinnacle Ridge) or Gen3 x2 (16 Gb/s) (with Athlon 2xxGE series APU and Raven Ridge 2)
- 1 x M.2 Socket (M2_2), supports M Key type 2230/2242/2260/2280/22110 M.2 SATA3 6.0 Gb/s module and M.2 PCI Express module up to Gen3 x2 (16 Gb/s)

M2_2, SATA3_3 and SATA3_4 share lanes. If either one of them is in use, the others will be disabled.

If M2_1 is occupied, PCIE4 will be disabled.
Supports NVMe SSD as boot disks
Supports ASRock U.2 Kit

- 1 x COM Port Header
- 1 x TPM Header
- 1 x Power LED and Speaker Header
- 1 x RGB LED Header
- 1 x Addressable LED Header
- 1 x AMD Fan LED Header
- 1 x CPU Fan Connector (4-pin)
- 1 x CPU/Water Pump Fan Connector (4-pin) (Smart Fan Speed Control)
- 3 x Chassis/Water Pump Fan Connectors (4-pin) (Smart Fan Speed Control)
- 1 x 24 pin ATX Power Connector
- 1 x 8 pin 12V Power Connector
- 1 x Front Panel Audio Connector
- 2 x USB 2.0 Headers (Support 4 USB 2.0 ports) (Supports ESD Protection)
- 1 x USB 3.1 Gen1 Header (Supports 2 USB 3.1 Gen1 ports) (Supports ESD Protection)

Supports in total up to 5V/3A, 15W LED Strip

The AMD Fan LED Header supports LED strips of maximum load of 3A (36W) and length up to 2.5M.

The CPU Fan Connector supports the CPU fan of maximum 1A (12W) fan power.

The CPU/Water Pump Fan supports the water cooler fan of maximum 2A (24W) fan power.

The Chassis/Water Pump Fan supports the water cooler fan of maximum 2A (24W) fan power.
CPU_FAN2/WP, CHA_FAN1/WP, CHA_FAN2/WP and CHA_FAN3/WP can auto detect if 3-pin or 4-pin fan is in use.

- 7.1 CH HD Audio with Content Protection (Realtek ALC892 Audio Codec)
- Premium Blu-ray Audio support
- Supports Surge Protection
- Nichicon Fine Gold Series Audio Caps
- PCB Isolate Shielding
- Individual PCB Layers for R/L Audio Channel
- Gold Audio Jacks

To configure 7.1 CH HD Audio, it is required to use an HD front panel audio module and enable the multi-channel audio feature through the audio driver.

- 1 x PS/2 Mouse/Keyboard Port
- 1 x HDMI Port
- 1 x DisplayPort 1.2
- 1 x Optical SPDIF Out Port
- 2 x USB 2.0 Ports (Supports ESD Protection)
- 1 x USB 3.1 Gen2 Type-A Port (10 Gb/s) (Supports ESD Protection)
- 1 x USB 3.1 Gen2 Type-C Port (10 Gb/s) (Supports ESD Protection)
- 4 x USB 3.1 Gen1 Ports (Supports ESD Protection)
- 1 x RJ-45 LAN Port with LED (ACT/LINK LED and SPEED LED)
- HD Audio Jacks: Rear Speaker / Central / Bass / Line in / Front Speaker / Microphone (Gold Audio Jacks)

Ultra USB Power is supported on USB3_34 ports.
ACPI wake-up function is not supported on USB3_34 ports.

Software
- ASRock A-Tuning
- ASRock Polychrome SYNC
- ASRock XFast LAN
UEFI
- ASRock Full HD UEFI
- ASRock Instant Flash
- ASRock Easy RAID Installer

These utilities can be downloaded from ASRock Live Update & APP Shop.