ASUS Pro A620AT-CSM AMD A620A Thin Mini-ITX Motherboard AM5 DDR5 SO-DIMM ECC 19V DC-in LVDS DASH
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ASUS
ASUS Pro A620AT-CSM AMD A620A Thin Mini-ITX Motherboard AM5 DDR5 SO-DIMM ECC 19V DC-in LVDS DASH
€160.75 inc. VAT
90MB1L5M-M0EAYC
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ASUS Pro A620AT-CSM — Thin Mini-ITX AM5 Business Board with DDR5 SO-DIMM, 19 V DC-in and DASH
Thin Mini-ITX 17 x 17 cm19 V DC-in, no ATX PSUDDR5 SO-DIMM with ECCDASH remote management
The ASUS Pro A620AT-CSM is a Thin Mini-ITX business motherboard on the AMD A620A chipset for Socket AM5, designed for all-in-one systems, kiosks, digital signage and space-constrained office PCs rather than conventional tower builds. It carries the part number 90MB1L5M-M0EAYC (EAN 4711636116053) and takes AMD Ryzen 9000, 8000 and 7000 Series desktop processors rated up to 65 W, with two DDR5 SO-DIMM slots supporting up to 128 GB of ECC or non-ECC unbuffered memory. The board runs from a 19 V DC input rather than an ATX power supply, outputs to DisplayPort, HDMI and an LVDS panel connector, and supports DASH out-of-band management with ASUS Control Center Express. Typically in stock with fast delivery across Cyprus.
Compatibility — check before buying:
This is an embedded and all-in-one class board, not a desktop tower board — read these points before ordering. It is powered by 19 V DC input (rear barrel connector plus an internal 2-pin +19V header); there is no 24-pin ATX connector, so a standard PC power supply cannot be used and the 19 V adapter is not included. CPU support is capped at 65 W, which rules out the higher-TDP Ryzen 9 parts. There is no PCIe expansion slot of any kind, so a discrete graphics card cannot be fitted — all display output comes from the processor integrated graphics. Memory is DDR5 SO-DIMM (the laptop format), not desktop DIMM. Storage is limited to one M.2 Key M slot and two SATA ports. Networking is Gigabit Ethernet, not 2.5Gb. There is an M.2 Key E slot for Wi-Fi but the wireless module is sold separately. Finally, Thin Mini-ITX chassis are height-limited, so plan on a low-profile cooler.
Best For
✓ All-in-one and panel PC designs using the LVDS connector
✓ Digital signage and kiosk systems needing 24/7 reliability
✓ Ultra-compact office desktops with no room for an ATX supply
✓ Fleets managed out-of-band over DASH and ASUS Control Center Express
✓ Workloads that benefit from ECC memory in a small chassis
✓ Point-of-sale builds needing COM port and chassis intrusion headers
Key Features
Thin Mini-ITX at 17 x 17 cm, powered by 19 V DC
The board measures 17.0 x 17.0 cm and runs from a single 19 V DC input, so the whole system can be built around a laptop-style external adapter with no ATX power supply and no internal cabling loom. That is what makes it practical inside an all-in-one shell or a wall-mounted signage enclosure.
DDR5 SO-DIMM with ECC support
Two SO-DIMM slots take up to 128 GB of DDR5 in dual channel, and unusually for this class the board accepts both ECC and non-ECC unbuffered modules, with On-Die ECC on standard non-ECC DDR5. ASUS Enhanced Memory Profile handles tuning. SO-DIMM keeps the board profile low enough for thin chassis.
LVDS, DisplayPort and HDMI with AIO headers
Alongside DisplayPort 1.4 and HDMI 2.1, both rated for 4K at 60 Hz, there is a proper LVDS connector plus backlight inverter voltage, panel voltage, FPD brightness and panel-off headers, along with stereo speaker and DMIC headers. Those are the pieces an all-in-one integration actually needs.
DASH management and commercial-grade hardening
A Realtek RTL8111EPV-CG Gigabit controller supports DASH out-of-band management, paired with ASUS Control Center Express for fleet IT. The board adds self-recovering BIOS, an event log, anti-moisture coating, overcurrent protection, a G-sensor, Q-LED Core diagnostics and a 24/7 reliability rating.
Technical Specifications
Frequently Asked Questions
Singular Expert Insight
Do not judge this board against a tower motherboard — it is competing with embedded and all-in-one platforms, and against those it is unusually capable: AM5 with current Ryzen silicon, ECC-capable DDR5 and DASH management in 17 x 17 cm running on a laptop brick. That combination is genuinely hard to find. The trade-offs are real and worth stating plainly: 65 W CPU ceiling, one M.2 slot, two SATA ports, Gigabit rather than 2.5Gb, and no PCIe slot at all, so the integrated GPU is the only graphics you will ever have. Specify the memory as DDR5 SO-DIMM rather than desktop DIMM, and pick your M.2 SSD carefully since it is the only NVMe slot on the board. If your project is a signage player, a kiosk or a panel PC, this is exactly the right shape of board. If it is a desktop that happens to be small, a standard mini-ITX A620 or B650 board with an ATX supply will be cheaper and more flexible.
Buyer's Guide
Buy it if
You are building an all-in-one, kiosk, signage player or ultra-compact office PC that runs from a 19 V adapter, needs LVDS or panel headers, and benefits from DASH management, ECC memory and a Corporate Stable Model lifecycle.
Skip it if
You want a normal desktop with an ATX power supply, a discrete graphics card, more than one NVMe drive, a CPU above 65 W, or 2.5Gb networking — none of those are possible on this board.
Also consider
A standard mini-ITX or micro ATX A620 or B650 board if you want ATX power and a PCIe graphics slot, or the ASUS PRIME B840M-K for a conventional micro ATX AM5 desktop build.
Features - ASUS - 90MB1L5M-M0EAYC
CPU Socket
- Socket AM5
Colour
black
More Details
Product Code
04:546216
EAN Code
4711636116053
Manufacturer
ASUS