ZPE Systems · Branch and edge
Link SR
Compact x86 services router with SFP, PoE-powered Gigabit Ethernet, a serial console port and optional Wi-Fi and 4G LTE.
- 2 or 4-core Intel x86
- 1x SFP, 1x GbE PoE-in
- Optional dual-SIM 4G LTE
- DIN rail or wall mount

Overview
The Nodegrid Link SR is the smallest unit in ZPE's Nodegrid SR family. It runs Nodegrid OS on an Intel x86 processor and provides routing, firewall, VPN, out-of-band access and cellular failover from a box that measures 170 x 130 x 55 mm. It can be powered by PoE or a 10 to 57 V DC supply, and can act as a cellular gateway or Wi-Fi access point for a branch server room or wiring closet. It integrates with ZPE Cloud and Nodegrid Manager for zero touch provisioning and central management.
Built for
- Out-of-band access to remote branch closets
- Cellular failover for unstaffed sites
- Cellular gateway for low-signal server rooms
- Hosting VNFs and containers at the edge
Key features
PoE or DC power
Runs from PoE on its Gigabit Ethernet port or from a 10 to 57 V DC input, with an optional AC adapter.
Cellular failover
An optional dual-SIM 4G LTE Cat 12 slot keeps the site reachable when the primary link fails.
Open Nodegrid OS
64-bit Linux platform that hosts guest OS, VNFs, Docker and Kubernetes containers.
Zero touch provisioning
Deploys and updates configuration and firmware over the WAN through ZPE Cloud.
Built-in security
Firewall, IPsec, WireGuard and SSL VPN, TPM 2.0, UEFI Secure Boot and a self-encrypting disk.
Specifications
- CPU
- Intel x86_64, 2 cores (LSR-24) or 4 cores (LSR-48)
- Memory
- 4 GB or 8 GB DDR3
- Storage
- 16 GB hardware-encrypted SSD, optional 128 GB second disk
- Interfaces
- 1x RJ45 serial, 1x GbE RJ45 with PoE in, 1x SFP (1G), 2x GPIO, 2x digital out, 2x USB 2.0, 1x VGA
- Wireless (optional)
- Wi-Fi 5 802.11ac 2x2, 4G LTE Cat 12 with dual SIM
- Power
- 10 to 57 V DC or PoE in, 20 W typical
- Dimensions
- 170 x 130 x 55 mm, 1.04 kg
- Mounting
- DIN rail and wall mountable
- Operating temperature
- 0 to 60 °C, 20 to 90% RH non-condensing
- Warranty
- 2-year limited warranty
Models
| Part number | CPU and memory | Options | Ordering status |
|---|---|---|---|
| ZPE-LSR-24-Base | 2 cores, 4 GB | Base | Orderable |
| ZPE-LSR-24-W5 | 2 cores, 4 GB | Wi-Fi 5 | Orderable |
| ZPE-LSR-24-4G | 2 cores, 4 GB | 4G LTE | 4G configurations: last order 31 Dec 2026 |
| ZPE-LSR-24-4G-W5 | 2 cores, 4 GB | 4G LTE, Wi-Fi 5 | 4G configurations: last order 31 Dec 2026 |
| ZPE-LSR-24-4G-W5-D128G | 2 cores, 4 GB | 4G LTE, Wi-Fi 5, 128 GB second disk | 4G configurations: last order 31 Dec 2026 |
| ZPE-LSR-48-Base | 4 cores, 8 GB | Base | End of sale 31 Dec 2025 |
| ZPE-LSR-48-W5 | 4 cores, 8 GB | Wi-Fi 5 | End of sale 31 Dec 2025 |
| ZPE-LSR-48-4G | 4 cores, 8 GB | 4G LTE | End of sale 31 Dec 2025 |
| ZPE-LSR-48-4G-W5 | 4 cores, 8 GB | 4G LTE, Wi-Fi 5 | End of sale 31 Dec 2025 |
| ZPE-LSR-48-4G-W5-D128G | 4 cores, 8 GB | 4G LTE, Wi-Fi 5, 128 GB second disk | 4G configurations: last order 31 Dec 2026 |
Specifications as published by ZPE Systems. Configurations vary by model; we will confirm the exact build with your quote.
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Not sure which Nodegrid fits?
Tell us your rack count, sites and failover needs. We will size the platform and quote it.