Specifications
ALPON X4 Specifications
Complete hardware and electrical specifications for the ALPON X4: an industrial edge computer built on Raspberry Pi Compute Module 4 with global LTE Cat 4 connectivity, eSIM, dual-band Wi-Fi 5, and ALPON Cloud fleet management. Use this reference for mechanical integration, power budgeting, radio planning, and regulatory compliance.
The ALPON X4 ships with a Broadcom BCM2711 quad-core Cortex-A72 @ 1.5 GHz on Raspberry Pi CM4, up to 8 GB LPDDR4 RAM, up to 32 GB eMMC flash storage, 1 Gbps + 100 Mbps Ethernet with optional PoE+ on the ETH/G port, LTE Cat 4 with eSIM (eUICC), Wi-Fi 5 dual-band, Bluetooth 5.0 / BLE, GNSS, and an Infineon SLB 9670 TPM 2.0. The fanless aluminum enclosure operates from -20 °C to +60 °C with MTBF over 13 years at 25 °C. Built on Raspberry Pi.
01Mechanical & environmental
The ALPON X4 uses a fully aluminum, fanless enclosure. The top face acts as a passive cooling surface and must remain unobstructed to ensure thermal performance. DIN rail and wall mount kits are available as optional accessories.
| Dimensions | 111.16 × 99.9 × 33 mm (4.37 × 3.93 × 1.30 in), without antennas |
| Weight | Approx. 457 g (1.0 lb) |
| Case Material | Full aluminum enclosure, top side passively cooled |
| Protection Class1 | IP40 |
| Operating Temperature | -20 °C to +60 °C (-4 °F to +140 °F) |
| Storage Temperature | -40 °C to +85 °C (-40 °F to +185 °F) |
| Max. Relative Humidity | Up to 95%, non-condensing |
| Environmental | Rugged, fanless design suitable for industrial and harsh environments |
| Mounting Options | DIN Mount (optional) · Wall Mount (optional) |
Mount the device with the aluminum top face exposed to ambient airflow. The enclosure is rated for +60 °C ambient; internal junction temperatures stay within CM4 thermal limits under typical industrial deployment scenarios.
02System & compute
The host platform is the Raspberry Pi Compute Module 4 with a Broadcom BCM2711 quad-core Cortex-A72 SoC. The ALPON X4 ships with a CR1220-backed real-time clock rated for up to 10 years of timekeeping without external power.
| Host Module | Raspberry Pi Compute Module 4 |
| Processor | Broadcom BCM2711 quad-core 64-bit Arm Cortex-A72 (Armv8) SoC @ 1.5 GHz |
| MTBF2 | > 13 years at 25 °C · > 11 years at 50 °C |
03Memory & storage
System memory and persistent storage are supplied by the CM4 module. Multiple memory and storage capacities are available as configuration options.
| System Memory | 8 GB LPDDR4 SDRAM (optional: 2 GB, 4 GB) |
| Primary Storage | 32 GB eMMC flash storage (optional: 8 GB, 16 GB) |
| Real Time Clock | CR1220 coin-cell battery, lifetime up to 10 years |
04Input & output
All externally accessible I/O is exposed on the front and rear faces of the enclosure. For pinouts and GPIO mapping, see the Physical Layout & I/O reference.
| USB | 2× USB 2.0 (High-Speed) |
| USB Power Capacity | 5 V DC, 1 A total (shared across both USB 2.0 ports) |
| Ethernet | 1× 1 Gbps (RJ45)3 · 1× 100 Mbps (RJ45) |
| Display | 1× HDMI 2.0 (up to 4Kp30) |
| GPIO Add-on Port | 1× RJ45-style connector exposing 6 GPIO pins (I2C, SPI, UART, digital/analog selectable) plus 5 V OUT, GND |
| GPIO Power Output | 5 V DC @ 1 A (5 W max) |
| Buttons | 2× user-programmable push buttons (PB1 on GPIO 5, PB2 on GPIO 6) |
| LED Indicators | 4 indicator LEDs: 1× programmable RGB · 1× cellular status · 1× connection status · 1× power status |
| Switches | 1× boot/burn DIP switch · 1× watchdog enable/disable DIP switch |
The RJ45-style GPIO Add-on port is not an Ethernet or PoE port. Connecting an Ethernet or PoE cable to this port causes permanent hardware damage. Use this port only for Sixfab Edge add-on modules.
Total current across both USB 2.0 ports is shared and capped at 1 A. Plan peripheral budgets so the combined draw stays within this envelope.
05Cellular
The integrated LTE Cat 4 modem supports global LTE bands. eSIM (eUICC SGP.22) is soldered on-board for remote profile provisioning and carrier switching without a physical SIM swap.
| Cellular Module4 | 4G / LTE Cat 4 |
| Coverage | Global |
| Frequency Bands | B1 / B2 / B3 / B4 / B5 / B7 / B8 / B12 / B13 / B18 / B19 / B20 / B25 / B26 / B28 / B34 / B38 / B39 / B40 / B41 / B66 |
| Data Speed5 | LTE-FDD: up to 150 Mbps DL / 50 Mbps UL (theoretical) · LTE-TDD: up to 130 Mbps DL / 30 Mbps UL (theoretical) |
| SIM Type | eSIM (eUICC) SGP.22 compatible · Consumer profile management · remote download & switch |
| Antennas | 2× LTE (LTE Main + LTE Diversity) |
| Outdoor IP67 Antenna (Optional) | 3-meter cabled combination antenna with surface mount |
06Wi-Fi, Bluetooth & GNSS
Short-range wireless and positioning are provided by the CM4's integrated radio plus a dedicated GNSS receiver. Antenna naming uses the standard Sixfab convention: LTE Main, LTE Diversity, GNSS/GPS, Wi-Fi/Bluetooth.
| Wi-Fi | 2.4 GHz and 5.0 GHz dual-band, IEEE 802.11 b/g/n/ac (Wi-Fi 5) |
| Bluetooth | Bluetooth 5.0 / BLE |
| Positioning | GPS / GNSS · Cellular Geolocation |
| Antennas | 1× Wi-Fi/Bluetooth · 1× GNSS/GPS |
| Network Failover | Automatic failover across Gigabit Ethernet, Wi-Fi, and LTE Cat 4 (managed by the ALPON Cloud stack) |
For full antenna pattern, gain, and connector specifications, see Connectivity & Antenna Specifications.
07Power
The ALPON X4 accepts power on three inputs: a 9 to 30 V DC screw terminal, a USB Type-C PD sink, and an optional PoE+ (IEEE 802.3at) path on the ETH/G port. Typical power draw is 7 to 14 W with a 27 W peak under full load.
| Power Inputs | Screw Terminal Block (9 to 30 V DC) · USB-C PD sink (15 V DC, 1.8 A, 27 W) · PoE+ IEEE 802.3at (optional, ETH/G only) |
| Recommended Adapter | 27 W minimum (covers all supported configurations) |
| Power Consumption | 7 to 14 W typical · 27 W maximum (workload and peripheral dependent) |
| USB Output Power | 5 V DC, 1 A total (across both USB 2.0 ports) |
| Restricted Mode6 | Below 12 V input, the device runs only the CM4, LTE modem, and Ethernet ports; USB 2.0, the GPIO Add-on 5 V rail, HDMI output, and the RGB LED are disabled to prevent brownout damage |
Although the hardware tolerates simultaneous connections on multiple inputs through hardware ideal diodes, Sixfab does not recommend powering the device from more than one source at a time. When multiple inputs are connected, the device draws from the source with the highest voltage. Do not supply below 9 V or above 30 V from the terminal block.
08Security
The ALPON X4 ships with a hardware root of trust via the Infineon TPM 2.0 module. A hardware watchdog resets the device on firmware or OS failure, and all device-to-cloud traffic is tunneled through an always-on VPN dedicated to ALPON Cloud services.
| TPM Module | Infineon Technologies SLB 9670VQ2.0 (TPM 2.0, SPI interface) |
| Hardware Watchdog | Monitors device operation and resets on failure · enable/disable via DIP switch |
| Always-on VPN | Built-in VPN tunnel dedicated to ALPON Cloud services |
| Secure Communication | TLS-encrypted diagnostics and double-encrypted remote terminal access |
09Software
The device ships with the pre-installed ALPON X4 OS: a Raspberry Pi compatible Linux distribution with the ALPON Edge software stack. Application workloads deploy as containers via ALPON Cloud, with remote terminal, OTA updates, and fleet monitoring available from a single dashboard.
| Pre-installed OS | ALPON X4 OS (Raspberry Pi compatible, ARM64) with ALPON Edge software stack |
| Edge Software Features | Fleet management · device management · built-in security |
| Container Management | Deploy, monitor, and update containers across device groups via ALPON Cloud |
| Network Management | Multi-network support (Gigabit Ethernet, Wi-Fi 5, LTE Cat 4) with automatic failover |
| Remote Access | Always-on VPN tunnel · TLS-encrypted diagnostics · remote terminal |
| OTA Updates | Remote firmware, software, and OS updates |
| Architecture | ARM64 (aarch64) — application binaries must be built for this architecture |
10Expansion
Hardware expansion is provided through the GPIO Add-on port and USB ports, plus official Sixfab Edge add-on modules. eSIM remote provisioning supports the GSMA SGP.22 Consumer profile.
| SIM Type | eSIM (eUICC), GSMA SGP.22 compatible · Consumer profile management · remote download & switch |
| Supported Modules | Sixfab Edge add-on modules · third-party hardware via GPIO and USB |
11Compliance
The ALPON X4 targets the regulatory certifications listed below. Compliance status is updated continuously; for region-specific availability and certified frequency declarations, contact Sixfab.
| Regulatory Certifications | CE, FCC, IC, UKCA, RoHS, WEEE, REACH, PTCRB, Verizon7, ICASA7, RCM7 |
| Network & Carrier4 | Verizon, AT&T, T-Mobile, PTCRB, GCF |
| Warranty | 2-year limited warranty |
| Value-added Services | Hardware customization · Branding & labelling · Remote support · Add-on module customization · Software containerization support · Consulting services |
1 IP40 protection against solid objects greater than 1 mm. Not rated for liquid ingress.
2 MTBF (Mean Time Between Failures) calculated per Telcordia SR-332 at the specified ambient temperatures.
3 In some variants, the ETH/G port replaces the PoE+ port.
4 This product supports only 4G/LTE networks, with no fallback to 2G/3G. Performance on non-4G/LTE networks is not guaranteed.
5 Data rates are theoretical maxima. Actual throughput depends on network conditions, band, and carrier.
6 Restricted Mode is automatic. When input voltage drops below 12 V, the device disables high-power subsystems to keep core compute and connectivity online safely.
7 Certification in progress at time of writing.
Updated 10 days ago