ASRock > Motherboard Compare Result

Model	AB350 Pro4	AB350M Pro4

Form Factor	- ATX Form Factor: 12.0-in x 8.8-in, 30.5 cm x 22.4 cm - Solid Capacitor design	- Micro ATX Form Factor: 9.6-in x 9.6-in, 24.4 cm x 24.4 cm - Solid Capacitor design
Unique Feature	ASRock Super Alloy - Premium Power Choke - Sapphire Black PCB - High Density Glass Fabric PCB - 2oz Copper PCB ASRock Ultra M.2 (PCIe Gen3 x4) ASRock Full Spike Protection (for all USB, Audio, LAN Ports) ASRock Live Update & APP Shop	ASRock Super Alloy - Premium 42A Power Choke - Sapphire Black PCB - High Density Glass Fabric PCB - 2oz Copper PCB ASRock Ultra M.2 (PCIe Gen3 x4) ASRock Full Spike Protection (for all USB, Audio, LAN Ports) ASRock Live Update & APP Shop
CPU	- Supports AMD Socket AM4 A-Series APUs (Bristol Ridge) and Ryzen Series CPUs (Matisse, Picasso, Summit Ridge, Raven Ridge and Pinnacle Ridge) - Digi Power design - 9 Power Phase design	- Supports AMD Socket AM4 A-Series APUs (Bristol Ridge) and Ryzen Series CPUs (Vermeer, Cezanne, Renoir, Matisse, Picasso, Summit Ridge, Raven Ridge and Pinnacle Ridge)* - Digi Power design - 9 Power Phase design *Bristol Ridge does not supports since BIOS version 7.XX. Vermeer, Cezanne and Renoir CPUs are supported after updating the BIOS, using another CPU for that update.
Chipset	- AMD Promontory B350	- AMD Promontory B350
Memory	- 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 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 3200+(OC) / 2933(OC) / 2667 / 2400 / 2133 ECC & non-ECC, un-buffered memory* - AMD Ryzen series CPUs (Raven Ridge) support DDR4 3200+(OC) / 2933 / 2667 / 2400 / 2133 non-ECC, un-buffered memory* - AMD 7th Gen A-Series APUs support DDR4 2400 / 2133 non-ECC, un-buffered memory* - Max. capacity of system memory: 64GB** - 15μ Gold Contact in DIMM Slots For Ryzen Series CPUs (Picasso and Raven Ridge), ECC is only supported with PRO CPUs. Please refer to below table for AMD non-XMP memory frequency support. A-Series APUs: Ryzen Series CPUs (Matisse): Ryzen Series CPUs (Pinnacle Ridge): Ryzen Series CPUs (Picasso): Ryzen Series CPUs (Summit Ridge): Ryzen Series CPUs (Raven Ridge): SR: Single rank DIMM, 1Rx4 or 1Rx8 on DIMM module label DR: Dual rank DIMM, 2Rx4 or 2Rx8 on DIMM module label *Due to the operating system limitation, the actual memory size may be less than 4GB for the reservation for system usage under Windows 32-bit OS. For Windows 64-bit OS with 64-bit CPU, there is no such limitation.	- 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 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 3200+(OC) / 2933(OC) / 2667 / 2400 / 2133 ECC & non-ECC, un-buffered memory* - AMD Ryzen series CPUs (Raven Ridge) support DDR4 3200+(OC) / 2933 / 2667 / 2400 / 2133 non-ECC, un-buffered memory* - AMD 7th Gen A-Series APUs support DDR4 2400 / 2133 non-ECC, un-buffered memory* - Max. capacity of system memory: 64GB** - 15μ Gold Contact in DIMM Slots For Ryzen Series CPUs (Picasso and Raven Ridge), ECC is only supported with PRO CPUs. Please refer to below table for DDR4 UDIMM maximum frequency support. A-Series APUs: Ryzen Series CPUs (Matisse): Ryzen Series CPUs (Pinnacle Ridge): Ryzen Series CPUs (Picasso): Ryzen Series CPUs (Summit Ridge): Ryzen Series CPUs (Raven Ridge): SR: Single rank DIMM, 1Rx4 or 1Rx8 on DIMM module label DR: Dual rank DIMM, 2Rx4 or 2Rx8 on DIMM module label *Due to the operating system limitation, the actual memory size may be less than 4GB for the reservation for system usage under Windows 32-bit OS. For Windows 64-bit OS with 64-bit CPU, there is no such limitation.
Slots	AMD Ryzen series CPUs (Matisse, Summit Ridge and Pinnacle Ridge) - 2 x PCI Express 3.0 x16 Slots (single at x16 (PCIE2); dual at x16 (PCIE2) / x4 (PCIE4))* AMD 7th A-Series APUs - 2 x PCI Express 3.0 x16 Slots (single at x8 (PCIE2); dual at x8 (PCIE2) / x2 (PCIE4))* AMD Ryzen series CPUs (Picasso, Raven Ridge) - 2 x PCI Express 3.0 x16 Slots (single at x8 (PCIE2); dual at x8 (PCIE2) / x4 (PCIE4))* AMD Athlon series CPUs - 2 x PCI Express 3.0 x16 Slots (single at x4 (PCIE2); dual at x4 (PCIE2) / x2 (PCIE4))* - 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).	AMD Ryzen series CPUs (Matisse, Summit Ridge and Pinnacle Ridge) - 1 x PCI Express 3.0 x16 Slot (PCIE2: x16 mode)* - 1 x PCI Express 2.0 x16 Slot (PCIE3: x4 mode) AMD 7th A-Series APUs - 1 x PCI Express 3.0 x16 Slot (PCIE2: x8 mode)* - 1 x PCI Express 2.0 x16 Slot (PCIE3: x4 mode) AMD Ryzen series CPUs (Picasso, Raven Ridge) - 1 x PCI Express 3.0 x16 Slot (PCIE2: x8 mode)* - 1 x PCI Express 2.0 x16 Slot (PCIE3: x4 mode) AMD Athlon series CPUs - 1 x PCI Express 3.0 x16 Slot (PCIE2: x4 mode)* - 1 x PCI Express 2.0 x16 Slot (PCIE3: x4 mode) - 1 x PCI Express 2.0 x1 Slot - Supports AMD Quad CrossFireX™ and CrossFireX™ Supports NVMe SSD as boot disks *This feature is only supported with Ryzen Series CPUs (Summit Ridge and Raven Ridge).
Graphics	- Integrated AMD Radeon™ Vega Series Graphics in Ryzen Series APU* - Integrated AMD Radeon™ R-Series Graphics in A-series APU* - DirectX 12, Pixel Shader 5.0 - Shared memory default 2GB. Max Shared memory supports up to 16GB.** - Three graphics output options: D-Sub, DVI-D and HDMI - Supports Triple Monitor - Supports HDMI with max. resolution up to 4K x 2K (4096x2160) @ 24Hz / (3840x2160) @ 30Hz - Supports DVI-D with max. resolution up to 1920x1200 @ 60Hz - Supports D-Sub with max. resolution up to 1920x1200 @ 60Hz - Supports Auto Lip Sync, Deep Color (12bpc), xvYCC and HBR (High Bit Rate Audio) with HDMI Port (Compliant HDMI monitor is required) - Supports HDCP 1.4 with DVI-D and HDMI Ports - Supports Full HD 1080p Blu-ray (BD) playback with DVI-D and HDMI Ports Actual support may vary by CPU *The Max shared memory 16GB requires 32GB system memory installed.	- Integrated AMD Radeon™ Vega Series Graphics in Ryzen Series APU* - Integrated AMD Radeon™ R-Series Graphics in A-series APU* - DirectX 12, Pixel Shader 5.0 - Shared memory default 2GB. Max Shared memory supports up to 16GB.** - Three graphics output options: D-Sub, DVI-D and HDMI - Supports Triple Monitor - Supports HDMI with max. resolution up to 4K x 2K (4096x2160) @ 24Hz / (3840x2160) @ 30Hz - Supports DVI-D with max. resolution up to 1920x1200 @ 60Hz - Supports D-Sub with max. resolution up to 1920x1200 @ 60Hz - Supports Auto Lip Sync, Deep Color (12bpc), xvYCC and HBR (High Bit Rate Audio) with HDMI Port (Compliant HDMI monitor is required) - Supports HDCP 1.4 with DVI-D and HDMI Ports - Supports Full HD 1080p Blu-ray (BD) playback with DVI-D and HDMI Ports Actual support may vary by CPU *The Max shared memory 16GB requires 32GB system memory installed.
Audio	- 7.1 CH HD Audio with Content Protection (Realtek ALC892 Audio Codec) - Premium Blu-ray Audio support - Supports Surge Protection - ELNA Audio Caps	- 7.1 CH HD Audio with Content Protection (Realtek ALC892 Audio Codec) - Premium Blu-ray Audio support - Supports Surge Protection - ELNA Audio Caps
Lan	- PCIE x1 Gigabit LAN 10 / 100 / 1000 Mb / s - Realtek RTL8111GR - Supports Wake-On-LAN - Supports Lightning / ESD Protection - Supports LAN Cable Detection - Supports Energy Efficient Ethernet 802.3az - Supports PXE	- PCIE x1 Gigabit LAN 10 / 100 / 1000 Mb / s - Realtek RTL8111GR - Supports Wake-On-LAN - Supports Lightning / ESD Protection - Supports LAN Cable Detection - Supports Energy Efficient Ethernet 802.3az - Supports PXE
WiFi	- n/a	- n/a
USB
Rear Panel I/O	- 1 x PS / 2 Mouse / Keyboard Port - 1 x D-Sub Port - 1 x DVI-D Port - 1 x HDMI Port - 2 x USB 2.0 Ports (Supports ESD Protection) - 1 x USB 3.1 Gen1 Type-C Port (Supports ESD Protection) - 5 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: Line in / Front Speaker / Microphone	- 1 x PS / 2 Mouse Port - 1 x PS / 2 Keyboard Port - 1 x D-Sub Port - 1 x DVI-D Port - 1 x HDMI Port - 2 x USB 2.0 Ports (Supports ESD Protection) - 1 x USB 3.1 Gen1 Type-C Port (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: Line in / Front Speaker / Microphone
Storage	- 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 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 A-Series APU and Athlon series APU)** - 1 x M.2 Socket (M2_2), supports M Key type 2230 / 2242 / 2260 / 2280 / 22110 M.2 SATA3 6.0 Gb / s module M2_2 and SATA3_3 share lanes. If either one of them is in use, the other one will be disabled. *If M2_1 is occupied, PCIE4 will be disabled. Supports NVMe SSD as boot disks Supports ASRock U.2 Kit	- 4 x SATA3 6.0 Gb / s Connectors, support RAID (RAID 0, RAID 1 and RAID 10), NCQ, AHCI and Hot Plug* - 1 x Ultra M.2 Socket (M2_1), supports M Key type 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 A-Series APU and Athlon series APU)** - 1 x M.2 Socket (M2_2), supports M Key type 2230 / 2242 / 2260 / 2280 M.2 SATA3 6.0 Gb / s module M2_2 and SATA3_3 share lanes. If either one of them is in use, the other one will be disabled. *Supports NVMe SSD as boot disks Supports ASRock U.2 Kit
RAID
Connector	- 1 x COM Port Header - 1 x TPM Header - 1 x Power LED and Speaker Header - 1 x RGB LED Header* - 1 x AMD Fan LED Header* - 1 x CPU Fan Connector (4-pin) - 3 x Chassis 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 12V / 3A, 36W 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. **CHA_FAN2 and CHA_FAN3 can auto detect if 3-pin or 4-pin fan is in use.	- 1 x COM Port Header - 1 x TPM Header - 1 x Power LED and Speaker Header - 1 x RGB LED Header* - 1 x AMD Fan LED Header* - 1 x CPU Fan Connector (4-pin) - 2 x Chassis Fan Connectors (1 x 3-pin, 1 x 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 - 1 x AMD LED Fan USB Header - 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 12V / 3A, 36W 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. **CHA_FAN1 can auto detect if 3-pin or 4-pin fan is in use.
BIOS	- 128Mb AMI UEFI Legal BIOS with multilingual GUI support - Supports "Plug and Play" - ACPI 5.1 compliance wake up events - Supports jumperfree - SMBIOS 2.3 support - DRAM Voltage multi-adjustment	- 128Mb AMI UEFI Legal BIOS with multilingual GUI support - Supports "Plug and Play" - ACPI 5.1 compliance wake up events - Supports jumperfree - SMBIOS 2.3 support - DRAM Voltage multi-adjustment
Support CD	- Drivers, Utilities, AntiVirus Software (Trial Version), Google Chrome Browser and Toolbar	- Drivers, Utilities, AntiVirus Software (Trial Version), Google Chrome Browser and Toolbar
Software and UEFI	Software - ASRock A-Tuning - ASRock RGB LED - ASRock APP Charger UEFI - ASRock Full HD UEFI - ASRock Instant Flash - ASRock Easy RAID Installer *These utilities can be downloaded from ASRock Live Update & APP Shop.	Software - ASRock A-Tuning - ASRock RGB LED - ASRock APP Charger UEFI - ASRock Full HD UEFI - ASRock Instant Flash - ASRock Easy RAID Installer *These utilities can be downloaded from ASRock Live Update & APP Shop.
Hardware Monitor	- CPU, Chassis temperature sensing - CPU, Chassis Fan Tachometer - CPU, Chassis Quiet Fan - CPU, Chassis Fan multi-speed control - Voltage monitoring: +12V, +5V, +3.3V, Vcore	- CPU, Chassis temperature sensing - CPU, Chassis Fan Tachometer - CPU, Chassis Quiet Fan - CPU, Chassis Fan multi-speed control - Voltage monitoring: +12V, +5V, +3.3V, Vcore
OS	- Microsoft Windows 10 64-bit / 11 64-bit* *Bristol Ridge and Summit Ridge do not officially support Windows 11.	- Microsoft Windows 10 64-bit / 11 64-bit* *Bristol Ridge and Summit Ridge do not officially support Windows 11.
Certifications	- FCC, CE - ErP / EuP ready (ErP / EuP ready power supply is required)	- FCC, CE - ErP / EuP ready (ErP / EuP ready power supply is required)
Accessories	- Quick Installation Guide, Support CD, I / O Shield - 2 x SATA Data Cables - 2 x Screws for M.2 Sockets	- Quick Installation Guide, Support CD, I / O Shield - 2 x SATA Data Cables - 2 x Screws for M.2 Sockets