Key features

Model number	KN-3811	KN-3810
CPU	MT7981B 1300 MHz, dual core	EN7528DU 900 MHz, dual core
RAM	512 MB DDR4	256 MB DDR3
Flash memory, Dual Image	256 MB	128 MB
Wi-Fi 2.4 + 5 GHz	✔	✔
Wi-Fi class	AX3000	AX1800
Wi-Fi antennas	2.4 GHz: 2 external 5 GHz: 3 external	2.4 GHz: 2 external 5 GHz: 2 external
Wi-Fi client capacity	Up to 256 in 2.4 & 5 GHz (shared)	Up to 256 in 2.4 & 5 GHz (shared)
Ethernet ports	4 × 1 Gbps	4 × 1 Gbps
Link aggregation	Static (ports 1 + 2)	—
WPS/Wi-Fi button	✔	✔
FN button	✔	✔
USB ports	USB 3.0	USB 3.0
Mobile data connection	Via a compatible USB modem	Via a compatible USB modem
Mesh Wi-Fi System	✔	✔
DFS support	Zero Wait DFS (ch. 52–64) Standard DFS (ch. 100–140)	Standard DFS (ch. 52–140)

Performance

2.4 GHz Wi-Fi network	574 Mbps (802.11ax) 2T × 2R: 2SS, 40 MHz	574 Mbps (802.11ax) 2T × 2R: 2SS, 40 MHz
5 GHz Wi-Fi network	2402 Mbps (802.11ax) 3T × 3R: 2SS, 160 MHz	1201 Mbps (802.11ax) 2T × 2R: 2SS, 80 MHz
IPoE/PPPoE routing	Up to 1800 Mbps in duplex	Up to 1800 Mbps in duplex
L2TP/PPTP routing	Up to 900 Mbps	Up to 800 Mbps
WireGuard throughput	Up to 460 Mbps	Up to 130 Mbps
Reading from a USB drive	Up to 110 MB/s (USB 3.0)	Up to 90 MB/s (USB 3.0)

Wireless network

Seamless roaming 802.11k/r/v	✔	✔
MU-MIMO	✔	✔
Airtime Fairness	✔	✔
Beamforming	✔	✔
OFDMA	✔	✔
Pre-configured Wi-Fi protection	✔	✔
WEP, WPA-PSK	✔	✔
WPA2-PSK, WPA2-Enterprise	✔	✔
WPA3-PSK, WPA3-Enterprise, OWE	✔	✔
Multiple Wi-Fi networks	Up to 7	Up to 7
Access control by MAC address	✔	✔
Wi-Fi Multimedia (WMM)	✔	✔

Features and protocols

IPoE, PPPoE, PPTP, L2TP, 802.1x	✔	✔
Multi-WAN	✔	✔
Policy routing	✔	✔
Internet connection backup	✔	✔
Ping Check connectivity monitor	✔	✔
PPPoE/PPTP/L2TP pass-through	✔	✔
VLAN IEEE 802.1Q	✔	✔
Routing table (DHCP/Manual)	✔	✔
IntelliQoS	✔	✔
DHCP (client/server)	✔	✔
IPv6 Dual Stack	✔	✔
NAT	✔	✔
IGMP	✔	✔
UDP to HTTP proxy	✔	✔
UPnP	✔	✔
Manual port forwarding	✔	✔
SPI firewall with protection against DoS attacks	✔	✔
PPTP (client/server)	✔	✔
L2TP over IPSec client/server	✔	✔
OpenVPN client/server	✔	✔
SSTP client/server	✔	✔
Ethernet-over-IP, IP-IP, GRE	✔	✔
IPsec VPN (client/server)	✔	✔
WireGuard	✔	✔
Dynamic DNS client	✔	✔
Direct or cloud access via KeenDNS	✔	✔
HTTPS security for access via KeenDNS	✔	✔
Yandex.DNS Internet filter	✔	✔
Cloudflare DNS	✔	✔
SafeDNS parental control	✔	✔
AdGuard ad blocker	✔	✔
Traffic statistics per client	✔	✔
Bandwidth limit per client	✔	✔
Access schedule per client or interface	✔	✔
Guest hotspot with authentication (Captive Portal)	✔	✔

USB applications

Support for 5G/4G/3G USB modems	✔	✔
RAS, NDIS, CDC-Ethernet, QMI support	✔	✔
File server and personal cloud	✔	✔
FAT, FAT32, exFAT, NTFS, EXT2, EXT3, EXT4, HFS+ support	✔	✔
CIFS/SMB	✔	✔
AFP	✔	✔
FTP, SFTP	✔	✔
WebDAV	✔	✔
Time Machine, File History support	✔	✔
OPKG packages	✔	✔
Download Station	✔	✔
File server	✔	✔
Media server	✔	✔
Print server	✔	✔

Troubleshooting and management

Cloud-based Remote Network Monitoring and Management	✔	✔
Mobile app for Android and iOS	✔	✔
Web Interface with the Initial Setup Wizard and HTTPS security	✔	✔
Command Line (CLI) via TELNET/SSH	✔	✔
An option to control from external network	✔	✔
Backup and restore configuration	✔	✔
Automatic OS updates	✔	✔
System event logging	✔	✔

Physical specifications and environment requirements

Device dimensions excluding antenna, w x d x h	160 mm × 118 mm × 45 mm	214 mm × 154 mm × 33 mm
Device weight	369 g	400 g
Operating temperature	0–40 °С	0–40 °С
Operating humidity	20–95% non-condensing	20–95% non-condensing
Power supply voltage	100–240 V 50/60 Hz	100–240 V 50/60 Hz

Package contents

Device	✔	✔
Power adapter	12 V 1.5 A	12 V 1.5 A
Ethernet cable	✔	✔
Quick start guide	✔	✔