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NEW
CE FCC RoHS
S821G 8-Port Gigabit PoE Switch, 120W, 2 Uplink + SFP, 250m Extend
S821G
Type Unmanaged Smart Gigabit PoE Switch
PoE Ports 8× 10/100/1000Mbps (IEEE 802.3af/at)
Uplink Ports 2× 10/100/1000Mbps RJ45 + 1× 1000M SFP
PoE Per Port Up to 30W (802.3at)
Total PoE Budget 120W (Built-in AC 100~240V)
5 Years Warranty
Overview
- 8× full-Gigabit PoE ports (802.3af/at) — up to 30W per port, 120W total budget
- 2× Gigabit RJ45 uplinks + 1× Gigabit SFP fiber slot for flexible cascading
- AI Extend mode — one-key 250m long-distance PoE on Ports 1–8
- PoE Watchdog auto-reboots unresponsive cameras and APs (Ports 1–8)
- Port VLAN isolation via DIP switch to suppress broadcast storms
- Built-in AC 100~240V power supply — no external power bricks needed
- 8K MAC address table with 4Mbit packet buffer
- 4kV surge protection and steel fanless enclosure — desktop or wall mount
The S821G is an 11-port unmanaged smart Gigabit PoE switch with 8× full-Gigabit 802.3af/at PoE ports (30W each, 120W total), 2× Gigabit RJ45 uplinks, and 1× Gigabit SFP fiber slot, all powered by a built-in AC 100–240V supply. With one-key 250m EXTEND mode, PoE Watchdog auto-recovery, port VLAN isolation, a 22Gbps switching fabric, and 4kV surge protection in a fanless steel enclosure, it is built for Gigabit IP camera systems, Wi-Fi 6 AP networks, and small-to-medium business LANs that need full Gigabit throughput with a fiber backhaul.
Ideal For
- IP camera and NVR networks in hotels, schools, factories, and retail
- Wireless access point PoE power delivery across multi-floor buildings
- Deployments that need a fiber (SFP) uplink to a distant core switch
- VoIP phone networks requiring reliable uninterrupted PoE
- Small and medium business LAN switch deployments
Deployment Advantages
The built-in 120W AC power supply removes the need for external PoE injectors or power bricks, simplifying installation inside network cabinets. The dual Gigabit RJ45 uplinks plus a Gigabit SFP slot give you copper or fiber backhaul, making it easy to cascade switches or reach a distant aggregation point without bottlenecking camera traffic.
One-key 250m EXTEND mode on Ports 1–8 covers long cable runs to remote cameras and APs, while VLAN isolation suppresses the broadcast storms common in dense camera networks. PoE Watchdog automatically power-cycles devices that stop responding, keeping unmanned sites online between maintenance visits.
OEM/ODM Ready
MossLink offers OEM and ODM customization for this product, including custom port configurations, power budget variations, enclosure branding, and private-label packaging. Volume pricing is available for surveillance integrators, IT distributors, and enterprise resellers. Contact us to discuss your project requirements.
Specifications
| Type | Unmanaged Smart Gigabit PoE Switch |
| PoE Ports | 8× 10/100/1000Mbps (IEEE 802.3af/at) |
| Uplink Ports | 2× 10/100/1000Mbps RJ45 + 1× 1000M SFP |
| PoE Per Port | Up to 30W (802.3at) |
| Total PoE Budget | 120W (Built-in AC 100~240V) |
| Switching Capacity | 22Gbps |
| Forwarding Rate | 16.368Mpps |
| MAC Address Table | 8K |
| Extend Mode | Up to 250m @ 10Mbps (Ports 1–8) |
| PoE Watchdog | Ports 1–8 |
| Surge Protection | 4kV (8/20μs) per-port lightning protection |
| Enclosure | IP30 Steel, Fanless |
| Dimensions | 202 × 140 × 44 mm |
| Temperature | -20°C ~ +55°C |
Ordering & Customization
The S821G ships factory-direct from Shenzhen with full OEM/ODM support. Three customization levels are available depending on your order quantity:
Logo & Packaging (OEM)
From 100 units
- Your logo on the enclosure
- Branded box, labels & user manual
- Zero MossLink branding on final product
Custom Firmware (Software)
From 500 units
- Custom web UI & boot screen
- Default configuration & feature tuning
- Regional and regulatory presets
Custom Hardware (ODM)
From 1,000 units
- Enclosure & antenna modifications
- Port and power-budget variations
- PCB-level customization
Learn more about our OEM/ODM process →
- Standard MOQ
- 100 units for standard products with no customization
- Samples
- 1–5 evaluation units at product cost plus shipping — sample fee credited toward your first bulk order
- Lead Time
- In-stock products: 3–5 business days · bulk production: 3–4 weeks · OEM/ODM orders: 4–8 weeks
- Payment Terms
- 30% deposit, 70% balance before shipment · T/T and L/C accepted, in USD
- Shipping
- DHL / FedEx / UPS express, air and sea freight · DDP, FOB Shenzhen, or CIF terms
- Packaging
- Each unit individually boxed with protective foam; palletized export cartons for freight — carton specs available on request
- Quality Control
- 100% inspection and 24-hour burn-in testing; a signed QC report ships with every order
- Certifications
- CE, FCC, and RoHS standard · additional market certifications (IC, TELEC, NCC, etc.) available via ODM
Downloads
Frequently Asked Questions
What is the total PoE power budget of the S821G?
The S821G provides a 120W total PoE power budget from a built-in AC 100–240V power supply. Each of the 8 PoE ports supports up to 30W (802.3at), so you can run a mix of high-draw PTZ cameras and standard APs without external injectors. The built-in PSU keeps the cabinet clean and reduces the component count.
Are all ports on the S821G full Gigabit?
Yes. All 8 PoE ports are 10/100/1000Mbps, plus 2 Gigabit RJ45 uplinks and a Gigabit SFP slot — every port is Gigabit-capable. This suits Gigabit IP cameras, Wi-Fi 6 access points, and NVR backhaul that need full 1000Mbps throughput, not just a fast uplink.
How does the 250m Extend mode work?
Flipping the Extend DIP switch drops Ports 1–8 to 10Mbps and enables PoE power and data transmission over cable runs up to 250 metres — well beyond the standard 100m limit. This lets you place cameras or APs far from the switch without repeaters or mid-span injectors.
Is OEM/ODM customization available for this product?
Yes. MossLink offers full OEM and ODM services for this product, including custom firmware features, hardware modifications, enclosure branding, and private-label packaging. Minimum order quantities apply. Contact us to discuss your project requirements.
What is the MOQ for the S821G?
Standard S821G orders start at 100 units. Logo and packaging customization (OEM) also starts at 100 units, custom firmware at 500 units, and custom hardware (ODM) at 1,000 units. Contact sales with your target quantity for a formal quotation.
Can I get a sample of the S821G before bulk ordering?
Yes. We supply 1–5 evaluation units at product cost plus shipping, and the sample fee is credited toward your first bulk order. Contact us via email or WhatsApp with the model number to arrange a sample.
What is the lead time for the S821G?
In-stock units ship within 3–5 business days. Bulk production orders typically require 3–4 weeks, and OEM/ODM orders with customization take 4–8 weeks depending on complexity. Rush production is available at additional cost.
Is the S821G certified for my market?
The S821G carries CE, FCC, and RoHS certification as standard. Additional certifications for specific markets (IC, TELEC, NCC, etc.) can be arranged through our ODM service.
How is product quality controlled before shipment?
Every unit undergoes 100% inspection and 24-hour burn-in testing before leaving the factory, and a signed QC report ships with every order — full traceability from component to delivery.
What payment terms do you accept?
Standard terms are a 30% deposit with order confirmation and the 70% balance before shipment, paid in USD via T/T. Letter of credit and flexible terms are available for established partners.
Ready to source the S821G?
Factory-direct pricing, OEM/ODM customization from 100 units, and a 5 years warranty. Send us your target quantity — we reply within 24 hours.