The Moxa NPort 6400/6600 Series are high-performance, secure terminal servers that connect 4, 8, 16, or 32 serial RS-232/422/485 devices to an Ethernet network. Built with advanced security and redundancy features, these servers are ideal for critical infrastructure sectors including utilities, transportation, and manufacturing.

With support for TLS and SSH encryption, the devices provide secure serial-to-Ethernet transmission. Each serial port can be individually configured, and the 6600 models support adjustable termination and pull resistors for RS-485. If the Ethernet connection fails, a 64 KB port buffer ensures no data is lost—data is forwarded when connectivity is restored. Storage can be expanded via an SD card (up to 32 GB).

The NPort 6600 models come with an intuitive LCD panel for on-device configuration (standard temperature models only). Installation options include rack, DIN-rail, and wall mounting.

Technical Specifications:

Interfaces:

• Serial Ports: 4 / 8 / 16 / 32 RS-232/422/485
• Connectors: DB9 (NPort 6450) / 8-pin RJ45 (NPort 6600)
• Ethernet: 1x 10/100BaseT(X), expandable via NM modules (RJ45 or fiber)

Operation Modes:

• Standard: Real COM, TCP Server/Client, UDP, Pair Connection, Terminal, Ethernet Modem
• Secure: TLS/SSL Real COM, Secure TCP Server/Client, Reverse SSH, SSH

Communication:

• Baudrate: 50 bps to 921.6 kbps, supports non-standard rates
• Buffer: 64 KB per port, expandable via SD card (up to 32 GB)

Protocols:

• IPv4/IPv6, SNMP v1/v2c/v3, HTTPS, SSH v2, SMTP, Telnet, TCP/IP, UDP, LLDP, RIP v1/v2
• Security: RADIUS, TACACS+, AES-128/256, SHA-1/256/384

Mechanical & Environmental:

• Housing: Metal, rack-mount (NPort 6600), DIN/wall (NPort 6450)
• Temperature Ranges:
• Standard: 0 to 55°C
• -T Models: -40 to 75°C
• -HV Models: -40 to 85°C
• Dimensions:
• 6450: 158 x 103 x 35 mm (without ears)
• 6600: 440 x 195 x 44 mm (without ears)
• Weight:
• NPort 6450: 1,020 g
• NPort 6600: up to 3,600 g

Reliability:

• MTBF: up to 850,000 hours (model dependent)
• Built-in WDT, RTC, audible buzzer

Certifications:

• EN 55032/35, IEC 61000-4-2/3/4/5/6/8/11
• UL 60950-1, NEMA TS2 (traffic applications)
• RoHS, CRoHS, WEEE compliant

Package Contents:

• 1 x NPort 6400/6600 terminal server
• 1 x power cable (AC models)
• 1 x power adapter (NPort 6450)
• 1 x DB9 to RJ45 cable (6600 models)
• 2 x rack-mounting ears (6600 models)
• 1 x quick installation guide
• 1 x warranty card