Qotom Q190G4N-S07 Celeron J1900 Fanless Appliance

Note: AstLinux 1.2.10 or later is required

Board Specifications: Q1900G4 Nano Motherboard

Vendor: Product Page 1)

AstLinux Board Type:

  • “genx86_64” (Video Console: VGA)

Complete System Recommended Options:

  • Memory: 204-pin DDR3L (1.35V) 1333/1600 SO-DIMM 2GB
  • Storage: mSATA SSD (PC Engines msata16 “Phison” or similar)

Total System Power (no VGA connection): 7 Watts when idle.

Performance: 37.6 secs. (Maximum OpenVPN: 125 Mbps)

openvpn --genkey --secret /tmp/secret
time openvpn --test-crypto --secret /tmp/secret --verb 0 --tun-mtu 20000 --cipher aes-256-cbc




## Optional USB TTY serial login

More Info → USB TTY Serial Login


# libsensors configuration file
# -----------------------------
# Qotom Q190G4N-S07

# coretemp CPU sensor

BIOS Setup for Restore AC Power Loss:

The Energy-Related Products Directive (ERP) is the European Commission Directive required for products sold and exported to the EU. As such the Qotom Q190G4N-S07 does not automatically power on after a power failure. Obviously this feature needs to be disabled.

On startup (quickly) press the <DEL> key to enter the BIOS Setup, go to the “Advanced” → “ACPI Settings” . Make the following changes…

  • Restore AC Power Loss → Power On

The results should like the following screen…

BIOS Power On

BIOS Setup for Boot OS Selection (non-UEFI):

While in the BIOS Setup as above, check to make sure Legacy Win7 boot is enabled, go to the “Boot” menu…

  • Boot OS Selection → Legacy Win7

The results should like the following screen…

BIOS Legacy Boot

Save the above BIOS changes, reboot.

Note: On newer BIOS versions (12/2018) you might need to make the following changes, if you can't boot the AstLinux installation from an USB stick:

In “Chipset/South Bridge/USB Configuration”:

  • XHCI Mode → Disabled
  • USB 2.0(EHCI) Support → Enabled

If the mSATA was pre-installed (with e.g. PFSense) you also need to setup the Boot Priorities for the USB stick correctly on the “Boot” page.





1) there is also a nearly identical Q190G4U version in a slightly different design