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Green Micro ATX board with silver CPU cooler and black I/O shield

ASRock

ASRock N100M Micro ATX Intel motherboard

SKU CH-H846-DTC0Y MPN N100M

A compact Micro ATX board with an integrated Intel N100 quad-core up to 3.4 GHz, one DDR4 slot for 32 GB, PCIe 3.0 x16 running at x2, one M.2 Key M Gen3x2, 2 SATA3, HDMI, DisplayPort 1.4, D-Sub.

  • CPU Type- Intel® Quad-Core Processor N100 (Up to 3.4 GHz) - Supports
  • Chipset- Intel® Quad-Core Processor N100 (Up to 3.4 GHz) - Supports
  • Memory Standard1 x DDR4 DIMM Slot - Supports DDR4 non-ECC, un-buffered memo
  • Maximum Memory Supported32GB
  • PCI Express 3.0 x16- 1 x PCIe 3.0 x16 Slot (PCIE1), supports x2 mode* - 1 x PCI
  • Serial ATA (SATA)2 x SATA3 6.0 Gb/s Connectors *Supports NVMe SSD as boot dis
  • Quad-core N100 processor reaches 3.4 GHz for responsive everyday computing
  • Single DDR4 DIMM slot accepts up to 32 GB at 3200 MT/s
  • M.2 Key M socket takes 2242, 2260 or 2280 PCIe Gen3x2 SSDs
  • Three video outputs — D-Sub, HDMI and DisplayPort 1.4 — drive multiple displays
  • Realtek ALC897 codec delivers 7.1-channel high-definition audio

Embedded N100 processor and single DDR4 slot

The board integrates an Intel Quad-Core Processor N100 running up to 3.4 GHz with Turbo Boost, so no separate CPU purchase is needed. Memory is limited to one DDR4 DIMM slot supporting up to 32 GB at 3200 MT/s, with ECC UDIMM modules accepted in non-ECC mode. This makes it a compact, low-power foundation for basic desktop or appliance workloads.

Home-office builds versus expandable workstations

The single memory slot and x2 electrical PCIe 3.0 x16 slot suit simple productivity PCs, digital-signage players or thin clients where space and power draw matter. Builders needing dual-channel memory, full x16 graphics bandwidth, multiple M.2 drives or more than two SATA ports should choose a standard socketed platform instead.

One DDR4 DIMM slot caps memory at 32 GB

Only a single DDR4 module can be installed, so the absolute ceiling is 32 GB regardless of module density. If the intended workload requires 64 GB or benefits from dual-channel bandwidth, this board cannot meet that requirement.

Highlights

  • Quad-core N100 processor reaches 3.4 GHz for responsive everyday computing
  • Single DDR4 DIMM slot accepts up to 32 GB at 3200 MT/s
  • M.2 Key M socket takes 2242, 2260 or 2280 PCIe Gen3x2 SSDs
  • Three video outputs — D-Sub, HDMI and DisplayPort 1.4 — drive multiple displays
  • Realtek ALC897 codec delivers 7.1-channel high-definition audio

Specifications

BrandASRock
ModelN100M
Part NumberN100M
CPU Type- Intel® Quad-Core Processor N100 (Up to 3.4 GHz)
- Supports Intel® Turbo Boost Technology
Chipset- Intel® Quad-Core Processor N100 (Up to 3.4 GHz)
- Supports Intel® Turbo Boost Technology
Memory Standard1 x DDR4 DIMM Slot
- Supports DDR4 non-ECC, un-buffered memory up to 3200
- Supports ECC UDIMM memory modules (operate in non-ECC mode)
- Max. capacity of system memory: 32GB
Maximum Memory Supported32GB
PCI Express 3.0 x16- 1 x PCIe 3.0 x16 Slot (PCIE1), supports x2 mode*
- 1 x PCIe 3.0 x1 Slot (PCIE2)*
- 1 x M.2 Socket (Key E), supports type 2230 Intel® CNVio (Integrated WiFi/BT)**
*Supports NVMe SSD as boot disks
**M.2 PCI Express module is not supported
Serial ATA (SATA)2 x SATA3 6.0 Gb/s Connectors
*Supports NVMe SSD as boot disks
M.21 x M.2 Socket (M2_1, Key M), supports type 2242/2260/2280 PCIe Gen3x2 (16 Gb/s) mode*
Audio Channels7.1 CH HD Audio (Realtek ALC897 Audio Codec)
*The inbox driver for Windows® 10 only supports 2-channel audio output. Please refer to the FAQ to check how to turn on the 5.1-channel audio output and any limitations.
Max LAN SpeedGigabit LAN 10/100/1000 Mb/s
- Realtek 8111H
Back I/O Ports2 x Antenna Mounting Points
- 1 x PS/2 Mouse/Keyboard Port
- 1 x D-Sub Port
- 1 x HDMI Port
- 1 x DisplayPort 1.4
- 1 x USB 3.2 Gen2 Type-C Port (10 Gb/s)
- 2 x USB 3.2 Gen1 Ports
- 4 x USB 2.0 Ports
- 1 x RJ-45 LAN Port
- HD Audio Jacks: Line in / Front Speaker / Microphone
Windows 11- Microsoft® Windows® 10 64-bit / 11 64-bit
Form FactorMicro ATX
Dimensions (W x L)8.9-in x 7.0-in, 22.6 cm x 17.8 cm
FeaturesSoftware
- ASRock Motherboard Utility (A-Tuning)
- ASRock XFast LAN
UEFI
- ASRock EZ Mode
- ASRock Full HD UEFI
- ASRock Auto Driver Installer
- ASRock Instant Flash
*These utilities can be downloaded from ASRock Live Update & APP Shop.
Shipping weight0.65 kg
Package size275 × 213 × 72 mm

Questions about this item

What case clearance and mounting holes does the 22.6 cm x 17.8 cm Micro ATX board require?

The board uses the standard Micro ATX screw pattern and measures 22.6 cm wide by 17.8 cm deep, so any chassis with Micro ATX standoffs and at least that much tray area will fit.

Which step is often missed when installing the single DDR4 DIMM into the sole memory slot?

Align the notch on the module with the key in the slot, press down firmly until both side clips click shut, and verify the stick sits perfectly vertical; a tilted module will not post.

When should the M.2 2242/2260/2280 PCIe Gen3x2 drive be checked or replaced?

Monitor SMART health periodically; replace the drive if reallocated sectors rise, sustained write speeds drop sharply, or the UEFI no longer detects it as a boot device.

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