Optical Distribution Frame Modular HDX 1U (144 Fibres)

The frame achieves a 144-fibre capacity by using very high-density connectors and modular inserts. It is designed to hold 72 LC duplex connector ports (each LC duplex connects 2 fibres), arranged across the 1U panel. By densely grouping these connectors on removable cassettes or adapter plates, the frame can terminate 144 individual fibre strands within the compact 1U height.

The HDX 1U frame is designed around LC duplex fibre optic connectors as the standard interface on the front panel. LC duplex connectors are small form factor, which allows a high count of ports (72 duplex) in 1U. These can be UPC or APC polish depending on whether you are using multimode or single-mode fibre. The modular design also means it can potentially support other connector types via different adapter plates, but using larger connectors (like SC) would greatly reduce the number of fibres the panel can hold.

Yes. The panel itself is fibre-type agnostic – it can work with both single-mode (OS1/OS2) and multimode (OM3/OM4) fibres. The key is to use the appropriate adapter modules or couplers for the fibre type. For instance, single-mode deployments typically use LC/APC connectors (green colour) for low back-reflection, whereas multimode uses LC/UPC connectors (usually beige or aqua). As long as the adapters and patch cords match the fibre type, the frame will support either kind of fibre.

Absolutely – the HDX 1U is MPO/MTP ready when used with the proper cassettes. In practice, you would use MPO-based cassette modules: each module has an MPO multi-fibre connector at the rear for trunk cable input, and multiple LC duplex ports at the front. This allows you to connect high-count MPO/MTP trunk cables to the back of the panel, which then break out into individual LC connections on the front. It’s a common approach in data centres for quick plug-and-play fibre deployment.

The 1U HDX frame is primarily intended for patching and cross-connecting using pre-terminated cables or pigtails, rather than direct splicing. There isn’t a built-in splice tray in a standard 1U high-density panel because space is very limited. However, if splicing is required, it can be done by using special splice cassette inserts or an external splice enclosure. In practice, many users will splice fibres to pigtails in an external splice box, then connect those pigtails to the HDX panel’s adapters. Some modular systems do offer dedicated splice cassettes that fit into the 1U frame, but those would be optional components.

Typically, the HDX 1U chassis is sold empty, and the fibre adapter modules or cassettes are purchased separately according to your needs. This gives you flexibility to choose the connector types and fibre modes for each module (for example, single-mode LC/APC, multimode LC/UPC, MPO pass-through, etc.). The frame itself usually comes with rack-mount brackets and basic cable management hardware, but the actual fibre connector plates (and any splicing trays or MPO cassettes) would be ordered to suit the specific application.

The design includes features to help organise and protect the patch cords despite the high density. The front of the panel typically has little routing guides or rings on either side to channel the fibre jumpers and maintain proper bend radius as they exit the connectors. The shallow depth and front-access design mean that all terminations are reachable from the front of the rack. Technicians can easily patch or unpatch fibres because each module or adapter plate can be slid out or removed if needed, providing better access to the connectors. Additionally, the rear of the panel provides tie-down points or a bar for securing incoming trunk cables, ensuring that fibres are not strained or accidentally unplugged when performing maintenance.

A high-density 1U fibre frame is commonly used in data centres, large enterprise network rooms, and telecom operator facilities – anywhere that requires a lot of fibre connections in a limited space. For example, in a data centre core switch rack, you might have one of these panels connecting dozens of fibre links between aggregation switches. In telecom central offices or fibre distribution hubs, multiple 1U HDX panels could be stacked to manage hundreds of subscriber fibre lines. Essentially, it’s ideal for scenarios where rack space is at a premium but you need to terminate or patch a large number of fibres neatly and reliably.

Yes, this 1U panel is often part of a family of modular ODFs that come in various sizes. For instance, many manufacturers offer 2U or 4U versions using the same HDX modular system, which can hold 288 fibres (2U) or even 576 fibres (4U) in a single chassis. The modular cassettes are usually compatible across these sizes, so you can scale up by simply moving to a taller frame while reusing the same type of adapter modules. This allows organisations to standardise on the HDX system and choose a chassis size based on the fibre count needed, all while keeping the installation and maintenance practices consistent.