Vertiv 48-PORT ACS Dual AC W/ Analog Modem - ACS8048MDAC-400

Vertiv ACS8048MDAC-400 48-Port Dual AC Console Server with Analog Modem

Overview

The Vertiv ACS8048MDAC-400 is a 48-port out-of-band console server built for data center and enterprise network environments where you need reliable serial access to every managed device on the rack — even when the primary IP network is down. With dual AC power inputs, an integrated analog modem, and embedded Linux, this unit is engineered for the kind of resilient, always-available remote management that critical infrastructure demands. If you're managing 40+ serial devices across a co-location row or a distributed branch network, the ACS8048MDAC-400 (often searched as ACS8048MDAC 400) consolidates that access into a single 1U appliance without compromising your fallback paths.

Key Features

• 48 RS-232 Serial Ports: Every port is a direct console connection to a managed device — routers, switches, servers, PDUs, or storage arrays. At 48 ports in 1U, you're not burning multiple rack units or daisy-chaining adapters to cover a full rack of equipment.
• Dual AC Power Inputs (100–240V, 50–60Hz): Two independent AC feeds — each accepts 100 to 240V at 50–60Hz — so you can wire to separate PDU circuits. If one feed drops, the unit stays live and your console access stays intact. This is the spec that matters most when your primary network path is already gone.
• Integrated Analog Modem (Out-of-Band Path): The built-in analog modem gives you a true third access path independent of IP. In a total network failure scenario, dial-in access via PSTN remains available. For remote sites with unreliable broadband or for compliance environments that require an analog fallback, this modem is the reason to choose this variant over non-modem ACS models.
• 8 USB 2.0 Ports: Expand connectivity for external storage, USB-serial adapters, or cellular modems. At 8 ports, you have room to extend the unit's capability without a separate USB hub cluttering the rack.
• Dual Ethernet LAN (RJ-45): Two network interfaces let you connect to separate management VLANs or provide network redundancy. Separating in-band management from out-of-band traffic is standard practice in hardened NOC architectures.
• SSH / SSH-2 / SNMP / WPA2-RADIUS Security: All four protocols are supported. SSH-2 encrypts every console session in transit. SNMP enables integration into your existing NMS. WPA2-RADIUS support means the unit fits into 802.1X-authenticated wireless management networks where that's a requirement. IP address filtering lets you whitelist management source IPs and block everything else.
• Embedded Linux OS: The onboard Linux environment means scripting, automation, and custom integrations are native. No proprietary OS lock-in, and no separate licensing to run standard Linux tooling against the management interfaces.
• Event Logging: Every console session and port event is logged locally. For audited environments — financial, government, healthcare — this provides the chain-of-custody record that compliance teams require without bolting on a separate syslog appliance.
• 11W Typical Power Draw: At 11W across 48 ports plus dual AC, the power budget per managed device is under 0.25W. You're not burning a meaningful slice of your PDU budget on the out-of-band management layer.
• AC Outlet: C13 Coupler: Standard C13 connectivity means you're using the same power cables already in your rack. No proprietary connectors, no adapters.
• Operating Temperature -10°C to 60°C: The thermal envelope covers uncontrolled network closets and edge locations running warm, not just precision-cooled data center aisles. Deploy it in environments that fluctuate without worrying about thermal shutdowns.
• 1U Form Factor (438 × 241 × 44.5mm): Standard 1U depth of 241mm fits in shallow two-post relay racks and deep four-post cabinets equally. No depth surprises on delivery day.

Integration and Compatibility

The ACS8048MDAC-400 connects via its dual RJ-45 Ethernet ports to your management network and supports SSH-2 for encrypted CLI access and SNMP for NMS integration. IP address filtering lets you lock the management plane to specific subnets or hosts. The embedded Linux base is compatible with standard serial management workflows — expect straightforward integration with OpenSSH clients and most enterprise SNMP management platforms. The analog modem provides a PSTN-based out-of-band fallback that operates entirely independently of IP infrastructure, making it a natural pairing with out-of-band management architectures. For organizations standardizing on the Vertiv console server and KVM line, the ACS8048MDAC-400 slots into the same management framework as smaller-port-count ACS models.

Frequently Asked Questions

Q: How many serial devices can the ACS8048MDAC-400 manage simultaneously?

A: The unit provides 48 RS-232 serial ports, so up to 48 devices can be connected simultaneously. Each port is an independent console connection.

Q: What is the out-of-band access method if the IP network is unavailable?

A: The ACS8048MDAC-400 includes a built-in analog modem that provides dial-in access via PSTN, completely independent of IP network availability. This is the primary reason to select this model over non-modem ACS variants.

Q: Does the ACS8048MDAC-400 support redundant power?

A: Yes. The unit has dual AC power inputs, each accepting 100–240V at 50–60Hz. Connecting each input to a separate PDU circuit provides power path redundancy.

Q: What security protocols does the ACS8048MDAC-400 support?

A: Supported security protocols include SSH, SSH-2, SNMP, and WPA2-RADIUS. IP address filtering is also available to restrict management access to authorized source addresses.

Q: What operating system does the ACS8048MDAC-400 run?

A: The unit runs embedded Linux, which supports scripting and automation with standard Linux tooling without additional licensing.

Q: What is the power consumption of the ACS8048MDAC-400?

A: Typical power consumption is 11W — a minimal load on your PDU budget for a 48-port console server with dual AC and integrated modem.