CS4220-16GT-135-V2 - The cloud managed switch is the ideal solution for professional networks thanks to 16 Gigabit PoE ports , 2 Gigabit RJ45 uplinks and 2 Gigabit SFP ports , with a total PoE budget of 135W and IEEE 802.3af/at/bt support up to 90W on the red ports. It offers advanced management via DoLynk Cloud , real-time monitoring, VLAN, STP, RSTP and Link Aggregation support to ensure network stability and security. The Long Distance PoE function up to 250 meters and the PoE Watchdog system ensure business continuity and intelligent maintenance. Full metal design, surge protection up to 6 kV and operating temperature from -10°C to +55°C make it perfect for video surveillance, offices, hotels and industrial environments. Dahua
CS4220-16GT-135-V2 | 20-Port Cloud-Managed Network Switch with 16 PoE Ports - Version 2 - Dahua

The Dahua CS4220-16GT-135-V2 is a professional Cloud Managed switch designed for enterprise networks and high-performance video surveillance systems. With 20 Gigabit ports , including 16 PoE ports with a total budget of 135W , it supports IEEE 802.3af/at/bt power supply up to 90W for high-power devices. Centralized management via DoLynk Cloud , support for VLAN, STP, RSTP and Link Aggregation and the Long Distance PoE function of up to 250 meters ensure maximum network stability and control. Equipped with PoE Watchdog , surge protection up to 6kV and a resistant metal structure, it is ideal for offices, hotels, shops and industrial environments.
Main specifications:
- 16 RJ45 Gigabit PoE ports + 2 RJ45 uplinks + 2 SFP Gigabit ports
- Total PoE budget 135W with IEEE 802.3bt support up to 90W
- Cloud Management via DoLynk platform and Web Management
- Supports VLAN, STP, RSTP and Link Aggregation
- Long Distance PoE up to 250 meters
- Long Distance PoE transmission up to 250 meters
- Intelligent PoE Watchdog function
- Surge protection up to 6 kV
- Operating temperature from -10°C to +55°C
Further details
With 40Gbps switching capacity, forwarding rate up to 29.76Mpps , 15KB Jumbo Frame support and 8K MAC table, the switch ensures high performance, smooth data transmission and maximum reliability even in complex professional environments.
Technical data sheet
| PRODUCT | CS4220-16GT-240-V2 |
| Basic | |
| Layer | Layer 2 |
| Switching Capacity | 40 Gbps |
| Packet Forwarding Rate | 29.76 Mpps |
| Description of Function Slots | Port 1-16: 16 × RJ-45 10/100/1000 Mbps (PoE) Port 17-18: 2 × RJ-45 10/100/1000 Mbps (uplink) Port 19-20: 2 × SFP 1000Mbps (uplink) |
| Operating Temperature | –10 °C to +55 °C (+14 °F to +131 °F) |
| Operating Humidity | 10%–90% (RH), non-condensing |
| Storage Temperature | –40 °C to +75 °C (-40 °F to +167 °F) |
| Storage Humidity | 5%–95% (RH), non-condensing |
| Power Supply | Built-in power supply: 100–240 VAC, 47–63 Hz, max 4 A |
| Power Consumption | Idling: 11.8 W Full load: 253.5 W |
| Statics Protection | Air discharge: 8 kV; Contact discharge: 6 kV |
| Lighting Protection | Common mode: 6 kV Differential mode: 1 kV |
| Net Weight | 2.5 kg (5.51 lb) |
| Gross Weight | 3.2 kg (7.05 lb) |
| Product Dimensions | 440 mm × 228.81 mm × 43.65 mm (17.32" × 9.01" × 1.72") (L × W × H) |
| Packaging Dimensions | 540 mm × 342 mm × 90 mm (21.26" × 13.46" × 3.54") (L × W × H) |
| Casing Material | Sheet metal |
| Installation | Desktop mount; wall mount |
| Certifications | THERE IS |
| PoE | |
| PoE | Yes |
| PoE Power | Port 3-16≤30W, port 1-2≤90W, total≤240W |
| PoE Protocol | IEEE 802.3af; IEEE 802.3at; Hi-PoE; IEEE 802.3bt |
| PoE Power Consumption Management | PoE power consumption management PoE power on/off turns off PoE if overload is detected |
| PoE Pin Assignment | Port 1-2: 1,2,4,5 (V+),3,6,7,8 (V-) Port 3-16: 1.2, (V+), 3.6, (V-) |
| Long Distance PoE Transmission | Yes |
| Hardware | |
| DIP Switch | Managed Mode: On by default for both local web and cloud management. Off for Unmanaged Mode. PoE Watchdog: Monitors ports 1-16 and auto-restarts the PoE port when there is no traffic for 2 min. (Only works when Managed Mode is Off) Extend Mode: Ports 1-16; transmission distance up to 250 meters at 10 Mbps. (Only works when Managed Mode is Off) |
| Reset Button | 1 |
| Performance | |
| MTBF | 1,092,753 hours |
| Packet Buffer Size | 4 Mbit |
| Jumbo Frame | 15360 Bytes |
| MAC Table Size | 8K |
| Communication Standard | IEEE 802.3; IEEE 802.3u; IEEE 802.3x; IEEE 802.3ab; IEEE 802.3az; IEEE 802.3ad |
| VLAN Number | 32 |
| Feature | |
| Ethernet Loop Protection | STP; RSTP |
| VLAN Function | IEEE 802.1Q VLAN |
| Link Aggregation | Static Aggregation |
| Port Feature | IEEE 802.3x Flow Control Unknown Unicast Suppression Multicast Storm Control Broadcast Storm Control MAC+Port Binding Loop Prevention |
| Mirror | Local Port Mirroring N:1 Mirroring |
| Reliability | LLDP |
| DHCP Function | DHCP Client |
| Security | Port Isolation |
| Equipment Management | Web Management Cloud Management Logs Fault Alarm |
| General | |
| Packing List | 1 × Quick Start Guide 1 × Legal and Regulatory Information 1 × Power Cord 1 × Power Adapter |


