Adder AVM-C12-US – 12-Port Preconfigured KVM Matrix Switch

Product Overview

The Adder AVM-C12-US is a 12-port preconfigured network switch for the ADDERView Matrix KVM product line, based on the NETGEAR GSM4212P (M4250 series) and shipped ready for plug-and-play KVM matrix deployment with a US power cable. Arriving preconfigured with IGMP v2, snooping, and jumbo frames up to 9216 bytes, this KVM matrix network switch removes the network engineering step that often delays IP KVM projects. With ten Gigabit RJ45 ports — eight of them PoE (802.3af) with a 125W budget — plus two SFP ports for fiber extension, it is the recommended backbone for small ADDERView Matrix C-Range systems.

Product Description

IP KVM matrices depend on correctly configured multicast networking; a misconfigured switch is the most common cause of failed deployments. Adder solves this by supplying the NETGEAR GSM4212P preconfigured for ADDERView Matrix out of the box: connect your AVM transmitters and user stations and the matrix simply works.

The switch provides 10x Gigabit RJ45 link ports and 2x SFP cages. Eight RJ45 ports deliver IEEE 802.3af PoE from a 125W total budget, powering PoE-capable AVM endpoints (such as the AVM-C1100 user station) over the link cable with no local supplies. The SFP ports accept fiber transceivers, so extension is not limited to 100m of copper — single-mode modules reach kilometers between equipment rooms.

Physically, this is a 1U rack-mount unit with an internal power supply, supplied with standard rack brackets, longer brackets for recessed mounting, rubber feet for tabletop use, and a country-specific IEC mains cable. Typical draw is a modest 18W (164W maximum with full PoE load). For larger systems, Adder also offers the 30-port AVM-C30; other switches meeting Adder's minimum specification can be used, but the AVM-C12 ships validated and configured. Pair it with ADDERView Matrix transmitters, receivers, and SFP modules from our Adder Technology collection.

Key Features

• Preconfigured for ADDERView Matrix — IGMP v2, snooping, and jumbo frames (9216 bytes) configured out of the box for true plug-and-play KVM networking.
• NETGEAR GSM4212P Platform — Built on the proven NETGEAR M4250 AV-line managed switch family.
• 8 PoE Ports, 125W Budget — IEEE 802.3af power on eight ports runs PoE-capable matrix endpoints without local supplies.
• 2x SFP for Fiber Extension — Add fiber transceivers to extend the matrix beyond 100m copper limits between buildings or floors.
• Full Gigabit Throughput — 1GbE on all link ports with 10/100 fallback support.
• 1U Rack Design with Internal PSU — Standard and recessed mounting brackets plus tabletop feet are included.
• Efficient Operation — Approximately 18W typical consumption; 164W maximum under full PoE load.

Typical Applications

• Broadcast studio — network core for compact ADDERView Matrix production systems.
• Government space — validated, preconfigured switching for controlled KVM networks.
• Commercial meeting space — backbone for multi-room KVM and AV distribution.
• Training room — connect instructor sources and learner stations on one matrix switch.
• Boardroom — discreet rack-mounted core for executive KVM systems.

Technical Specifications

Frequently Asked Questions

Why buy the AVM-C12 instead of a generic Gigabit switch?
The AVM-C12 arrives preconfigured with the IGMP v2, snooping, and jumbo-frame settings the ADDERView Matrix requires, validated by Adder. Other switches meeting the minimum specification can work but must be configured manually.

Which Adder devices can it power over PoE?
Eight ports supply IEEE 802.3af power from a 125W budget, suitable for PoE-capable ADDERView Matrix endpoints such as the AVM-C1100-USR-POE user station. Confirm per-device draw against the total budget when planning.

Can I extend the matrix over fiber?
Yes. The two SFP cages accept 1GbE transceivers — Adder offers single-mode (up to 20km), multi-mode (up to 550m), and RJ45 SFP modules — so distance is not limited to 100m of copper.

Is it rack mountable?
Yes. It is a 1U unit and ships with standard brackets, longer recessed-mount brackets, and rubber feet for tabletop placement.

What if I need more than 12 ports?
Adder offers the AVM-C30, a 30-port version (26x RJ45 + 4x SFP) with a 300W PoE budget. Contact Creation Networks for system sizing assistance.

Does the US version differ in hardware?
No. The -US suffix indicates the included US mains cable; the switch hardware and configuration are identical across regions.