01 / TOTAL OOB®
Reach infrastructure when the primary network is unavailable.
Use a separate management plane for secure remote console access and remediation of critical network devices.
Network Resilience Platform
NR4400Stay in control when the network isn't.
High-density Total Out-of-Band® management with secure remote access, edge compute, automation, optional global 4G LTE connectivity, and centralized management through ZERO.
NR4416NR4416-4GNR4448NR4448-4G
More than a console server. A platform for access, recovery, automation and edge operations.
The Gearlinx NR4400 is an enterprise network resilience platform designed for mission-critical data centers, colocations, enterprise edge environments, branch locations and distributed infrastructure. It gives network teams a separate, secure management plane to reach critical equipment when normal in-band access is unavailable.
With 16- and 48-port models, optional global 4G LTE, high-speed Ethernet, USB console management, secure boot, TPM 2.0, container support and virtualization, the NR4400 is built to support both immediate recovery and modern infrastructure operations.
● Total Out-of-Band access
● Edge compute & virtualization
● Cellular continuity options
● API-first automation
Product Anatomy
Built for dense, resilient infrastructure.
The NR4400 consolidates console access, network connectivity, USB management, local compute, security, and optional cellular connectivity in a 1RU platform.
16 or 48 Serial PortsSoftware-selectable RS-232 straight or rollover pinout.
High-Speed Networking2 × Gigabit Ethernet plus 2 × 1/10GbE SFP+ multi-rate ports.
USB Console Management8 × USB 2.0 plus 1 × USB 3.0 interface.
Optional 4G LTEGlobal CAT12 4G LTE with dual SIM on -4G models.
Interface configuration varies by model. See the full technical specifications and current datasheet for ordering details.
Core Capabilities
One platform. Six resilience advantages.
NR4400 is designed to move the out-of-band conversation beyond basic console access and into faster recovery, automation, secure operations and infrastructure control.
02 / CELLULAR
Add an independent path to remote sites.
NR4416-4G and NR4448-4G include global CAT12 4G LTE with dual SIM capability. The SIM slots are software-selectable and hardware-switchable.
03 / EDGE COMPUTE
Run workloads closer to the infrastructure.
Support for OCI containers and Linux KVM virtualization enables applications, services and guest operating systems at the edge.
04 / AUTOMATION
Automate deployment and ongoing operations.
Zero Touch Provisioning, REST API capabilities and Python support modern NetOps and DevOps workflows.
05 / SECURITY
Protect the management plane from the hardware up.
Secure boot, TPM 2.0, nftables firewall, WireGuard and IPsec VPN support, plus TACACS+, RADIUS and directory-based authentication.
06 / MANAGEMENT
Connect the appliance to a centralized operational layer.
NR4400 integrates with Gearlinx ZERO for centralized access and management without making the hardware page dependent on a separate management stack.
How NR4400 Works
A separate management path for critical infrastructure.
When in-band access is degraded or unavailable, NR4400 gives authorized teams another way to reach connected infrastructure. Optional 4G LTE models can provide cellular connectivity independent of the primary network.
ZERO sits above the appliance as the centralized management layer; the NR4400 remains the on-site platform for access, compute, automation and remediation.
Gearlinx ZEROCentralized management
↓
Network / IT OperationsSecure remote access & workflows
→
NR4400Total OOB • Automation • Edge Compute • Optional 4G LTE
RoutersSwitchesFirewallsServersStorageOther Serial / USB Devices
Choose Your NR4400
Match port density and cellular connectivity to the site.
The NR4400 family is available in 16- or 48-port configurations, with optional global 4G LTE for environments that require a cellular access path.
Model
Serial Ports
10GbE SFP+
4G LTE
Best Fit
NR4416
16 ports
2 × SFP+
No
Lower-density data center, enterprise and remote infrastructure.
NR4416-4G
16 ports
2 × SFP+
Included
Distributed environments requiring a cellular path.
NR4448
48 ports
2 × SFP+
No
High-density racks, data centers and colocation environments.
NR4448-4G
48 ports
2 × SFP+
Included
High-density infrastructure requiring cellular out-of-band connectivity.
All NR4400 models are 1RU, use dual AC power input, and support the NR4400 software and security platform. The -4G models add the cellular module.
Help Me Choose a ModelWhere It Fits
Designed for infrastructure that cannot wait for a truck roll.
NR4400 supports both high-density and geographically distributed environments where secure remote access, recovery and operational control matter.
01
Data Centers & Colocation
High-density serial access, redundant power, 10GbE interfaces and a separate management plane for critical equipment.
02
Enterprise Edge
Remote access, automation and compute at sites where IT staffing may be limited or centralized elsewhere.
03
Distributed Infrastructure
Consistent management and recovery capabilities across geographically dispersed network locations.
04
Day-0 through Day-2
Support provisioning, deployment, configuration, monitoring, remediation and ongoing infrastructure operations.
Managed Through ZERO
Centralized management without taking the focus off the hardware.
NR4400 connects to Gearlinx ZERO for centralized visibility, access and management. The dedicated ZERO product page can carry the deeper story around cloud management, organizations, lifecycle information and fleet operations.
Explore ZERO →
Technical Specifications
Engineering detail when you need it.
NR441616 × RJ45 RS-232 software-selectable serial ports
NR444848 × RJ45 RS-232 software-selectable serial ports
Serial rate50 to 230,400 bps
Local console1 × RJ45 RS-232, straight or rolled (physically switched)
USB8 × USB 2.0 plus 1 × USB 3.0
Ethernet2 × 10/100/1000 Gigabit Ethernet
SFP+2 × 1GbE/10GbE SFP+ multi-rate ports
Cellular modelsIntegrated dual-SIM global 4G LTE
Cellular speedCAT12
SIM2 × Mini-SIM (2FF), software-selectable / hardware-switchable
CPU2.0 GHz ARM Cortex-A72, 4-core
Memory8 GB DDR4
Internal storage64 GB SSD for logs, containers and VMs
Configuration storage512 MB NAND
VirtualizationLinux KVM support
ContainersOpen Container Initiative (OCI) support
Guest OSGuest operating system support
Hardware securityTPM 2.0
Secure bootSoC-enforced bootloader signature checking
Firewallnftables
VPNWireGuard and IPsec
AAATACACS+, RADIUS, Active Directory/OpenLDAP, local fallback
SSOOpenID through the Gearlinx platform
ProvisioningZero Touch Provisioning
APIREST API
AutomationPython
PlatformGearlinux; modern enterprise GUI/CLI; IPv4/IPv6; serial logging
Power inputDual IEC C14, 100–240V AC, 50/60 Hz
Power consumption18W non-cellular; 21W cellular
CoolingPassive; forward or reverse mountable
Dimensions1RU, 17.25 × 14.0 × 1.75 in (43.82 × 35.56 × 4.45 cm)
Weight7.7 lb (3.5 kg)
Operating temperature-5°C to 50°C (23°F to 122°F)
Humidity5% to 95%, non-condensing
MTBF150,000 hours
MonitoringBuilt-in temperature sensor
ORAAS Licensing
Choose the lifecycle that fits your infrastructure.
NR4400 is paired with an Operational Resilience as a Service® (ORAAS) subscription, available in 1-, 3-, 5-, and 7-year terms. Each subscription includes ZERO Cloud Portal enrollment, hardware warranty, technical phone support, and web support for the selected term.
1Year
3Years
5Years
7Years
ZERO Cloud Portal enrollment
Hardware warranty for the selected term
Technical phone support
Web support
Co-terming is available through ORAAS-COTERM to align enrollment units within a ZERO organization.
NR4400 Resources
Evaluate it. Deploy it. Support it.
PDFNR4400 Datasheet
Download →DeploymentQuick Start Guide
Get started →Technical SupportNR4400 Knowledge Base
View articles →ComplianceRegulatory & Compliance
View details →NR4400 FAQ
Answers to common questions about the NR4400, its capabilities, deployment options, and management.
The NR4400 is a 1RU network resilience platform designed for secure out-of-band access, high-density serial console management, optional 4G LTE connectivity, edge compute and automation. It is centrally managed through Gearlinx ZERO.
Yes. The NR4400 provides 16- or 48-port RS-232 console-server capability. Gearlinx positions it more broadly as a network resilience platform because it also supports edge compute, automation, optional cellular connectivity and centralized management.
The primary difference is serial-port density. NR4416 models provide 16 software-selectable RS-232 ports; NR4448 models provide 48. Each density is available with or without the 4G LTE module.
Yes on the -4G models. NR4416-4G and NR4448-4G include a global CAT12 4G LTE module with dual SIM capability. The SIM slots are software-selectable and hardware-switchable.
NR4400 can be administered through the Gearlinx software platform and is integrated with ZERO for centralized management and access.
Yes. The NR4400 supports Open Container Initiative containers and Linux KVM virtualization, with 8 GB DDR4 memory and 64 GB SSD storage for logs, containers and virtual machines.
Security capabilities include TPM 2.0, secure boot, nftables firewall, WireGuard and IPsec VPNs, and AAA methods including TACACS+, RADIUS, Active Directory/OpenLDAP and local fallback. OpenID-based SSO is also supported through the Gearlinx platform.
That is a core use case for out-of-band management. The NR4400 provides a separate management plane to reach connected infrastructure, and cellular models can add an independent 4G LTE connectivity option when the primary network path is unavailable.
Talk to Gearlinx
See the NR4400 in your environment.
Tell us about your port density, locations, cellular requirements and management architecture. We’ll help you identify the right NR4400 model and deployment approach.