Mini PC Series
Explore Qotom industrial mini PCs for embedded computing, automation, edge applications and commercial projects.
Since 2011, Qotom has designed and manufactured fanless industrial Mini PCs, embedded motherboards and multi-LAN soft routers. 2800+ models, factory-direct, with OEM/ODM customization, trusted in 100+ countries.

Full product line covering mini PCs, industrial motherboards, IPCs, and routers

Q10900G4XV-S04
4×2.5G5 COM
Serial-device integration is the focus of Q10900G4XV-S04, combining modern industrial Mini PC powered by Alder Lake-N and Twin Lake processors including N100 and N305, featuring 4×Realtek 2.5G LAN, 5×RS232 and DDR5 up to 48GB. COM1/2 can be configured as RS485, with 3×M.2 and SATA expansion for IoT gateways, automation and edge equipment. It can serve PLC communication, machine monitoring and serial-device management.

QCVC05

Q10700G4XV-S08
4×1G6 COM
For equipment requiring multiple serial connections, Q10700G4XV-S08 offers Intel Jasper Lake processors including N5105 with 4×Gigabit LAN, 6×RS232 and DDR4 up to 32GB. COM1/2 can be configured as RS485, while 3×M.2 and SATA provide expansion for storage and 4G/5G connectivity. This configuration suits production terminals, instrumentation and serial peripherals.

QENA1122-020
10 LAN

Q10800G4XV-S04
4×1G5 COM
Q10800G4XV-S04 brings Elkhart Lake industrial Mini PC supporting processors such as J6412, with 4×Gigabit LAN, 5×RS232 and DDR4 up to 32GB to industrial communication and embedded control projects. COM1/2 can be configured as RS485, while M.2, mSATA and SATA expansion support automation gateways, PLC communication and industrial. Typical applications include machine connectivity, industrial data acquisition and controller integration.

Q31200GT-S23
10×2.5G

Q31500ST-1U14
6×2.5G2×10G RJ452×10G SFP+1 COM

Q10900XPGV-S04
2×2.5G5 COM
Serial-device integration is the focus of Q10900XPGV-S04, combining Alder Lake-N and Twin Lake embedded Mini PC with 5 serial ports, 2×2.5G LAN and DDR5 up to 48GB. GPIO and VGA expand compatibility with industrial equipment, while N100, N305 and other processor options make it suitable for IoT.

Q300X-S05
2×1G6 COM
Q300X-S05 brings industrial Mini PC with 6 serial ports, dual Gigabit LAN and DDR3L up to 8GB, supporting Intel Haswell and Broadwell processors to industrial communication and embedded control projects. The platform also includes Multiple serial interfaces and flexible storage make it suitable for automation controllers, factory equipment, serial device.

Q20300SE-S23
4×10G RJ454×10G SFP+1 COM

Q400S-S08
2×1G
Q400S-S08 features Intel Haswell/Broadwell processors including Core i5 processor options with up to 8GB DDR3L, dual HDMI, SATA HDD/SSD, mSATA and dual Gigabit LAN. The platform also includes The fanless aluminum chassis suits quiet offices, POS systems, multimedia displays and embedded commercial applications. This configuration suits embedded installations, everyday computing and system integration.

Q70600PV-S09
2×1G3 COM
Designed for industrial terminals and equipment integration, Q70600PV-S09 supports Intel 6th–9th Gen desktop processors with dual DDR4 SO-DIMM memory and two Intel Gigabit LAN ports. Its serial interfaces, dual HDMI and VGA outputs enable connectivity with legacy peripherals and control equipment. M.2 SSD, SATA storage, Mini PCIe, GPIO, watchdog and auto-start functions provide flexibility for factory automation, POS systems and embedded applications. The aluminum chassis uses active fan cooling.
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This article covers full procedures to switch COM2 to RS485 mode for Q30400X series, including J1C2/J2C2 hardware jumper configuration, COM2 RS485 pin assignment, 120‑ohm termination resistor tips, and two troubleshooting solutions for serial‑port sequence disorder. Complete jumper and BIOS setup before RS485 testing.
Our engineering team can provide professional industrial computing solutions tailored to your specific needs.