What Are the Label Sheets in My Belden Patch Panel Box?

The sheet in your Belden patch panel box is a LabelFlex® PX-series label sheet. PX stands for the part number prefix used for in-box label sheets shipped free with Belden connectivity hardware. It's a pre-cut polyester sheet, dimensionally matched to the port spacing and label window of the specific panel it ships with.

LabelFlex has been Belden's official labeling solution since around 2001, when Silver Fox partnered with the structured cabling division to develop a software-driven labeling system that used standard office laser printers instead of handheld tape devices. The partnership has continued through every Belden corporate change since: the in-box label program is part of that same long-running arrangement.

What's printed on the sheet

Each PX sheet carries the Belden header, the label dimensions (for example 0.31" x 8.29"), the PX part number, a note about feed direction for laser printing, and a line pointing readers to the LabelFlex software download. The label area itself is blank and ready to print.

The PX number printed on your sheet tells you which Belden panel platform it belongs to. If you have the panel in hand, you can work backward from the panel model to confirm you have the right sheet. The table below covers every PX sheet currently shipped inside Belden copper patch panel boxes. Every PX SKU ships as a single half-sheet in the panel box, and each sheet carries one header label plus a fixed number of panel label strips.

Reading the "1 x 6 = 6" notation

Look at the top of your PX sheet and you will see a small notation near the Belden header, for example "1 x 6 = 6" on a PX104679. That is the sheet layout: one column of six label strips, giving six strips in total. The separate box marked "Header" is a dedicated header label used to identify the panel (rack position, panel name) rather than the individual ports. So a PX104679 gives you one header plus six 24-port strips on a single sheet.

How to identify your panel

If you aren't sure which Belden platform you have, the fastest check is the model number on the panel itself. Flex and HD panels are blank modular frames with numbered rectangular windows for keystones. KeyConnect panels have the same modular design but with KeyConnect-specific jack engagement. AngleFlex and 10GX IDC panels have angled inserts rather than flat ports. KeyConnect Angled panels combine the angled design with the KeyConnect jack platform.

The PX sheet dimensions are the other useful clue. A strip at 8.29 inches long, for example, is designed for a 24-port KeyConnect panel. A 1.26 inch strip is a per-insert label for AngleFlex or 10GX IDC.

Patch panel labeling is not optional. ANSI/TIA-606 requires labeling of telecommunications infrastructure components, and proper documentation of labeling is part of what Belden asks for when certifying installations under the extended and 25-year warranty tiers. Without accurate labels, the warranty case is harder to make and the installation is harder to hand over.

Including a pre-cut, pre-dimensioned label sheet in every panel box solves two problems at once. It puts the correct material in the installer's hands at the point of installation, and it points them toward software that will print on that material without alignment guesswork. A generic label sheet from a stationery supplier would not match the panel's port spacing. A handheld tape printer would produce one label at a time and cost more per label than the entire PX sheet.

Why the adhesive matters

Belden uses a textured finish on most structured cabling panels. Generic labels adhere poorly to textured surfaces, which is the root cause of the patch panel label peeling problem that many installers have seen with third-party labels. The PX sheets use an adhesive developed specifically for that finish, tested from -40°F to 212°F and against H2S sour gas exposure and IEC 60068-2-52 salt mist. That formulation exists because of the Belden partnership, not in spite of it.

The PX sheet is designed to be printed on a standard office laser printer, using the free LabelFlex Lite software. No handheld printer, no thermal ribbon, no proprietary hardware.

Step 1: Download LabelFlex Lite

Download the software from belden.com/products/labelflex or labelflex.io/pages/labelflex-free-trial-download. LabelFlex is Windows desktop software. There is no Mac or browser version. The Lite tier is free and includes every Belden panel template, which is all you need for printing a PX in-box sheet.

Step 2: Pick the matching template

Open LabelFlex and select the template that matches your PX sheet. Templates are named by panel platform, so if your sheet is PX104679 you pick the KeyConnect Patch Panel template, and the label dimensions will already be set correctly. Enter your port identifiers by typing, sequential numbering, or copy-paste from a spreadsheet.

Step 3: Load the sheet correctly

Every PX sheet is printed with a feed direction arrow and the instruction "USE MANUAL FEED - FOR LASER PRINTER USE ONLY." Load the sheet into the manual feed tray with the printable side facing the correct way for your printer. Most laser printers have a diagram on the tray indicating which way is up. If you get the orientation wrong, the labels will print on the liner, not the label surface.

Step 4: Print and apply

Print directly from LabelFlex. Peel each label from the sheet and apply to the panel's label window. The pre-cut dimensions mean each label drops straight into the window without trimming. If the panel has a protective Clear Window cover, lift it, apply the label, and close the cover.

The PX sheet in the box gives you enough labels for the panel it ships with, plus some spares for the inevitable re-prints. On a single-rack job, that is usually plenty. On larger installations or after multiple moves, adds, and changes, you will need additional sheets.

The equivalent purchasable product for each PX sheet is an AX-series pack. AX sheets are full US Letter sheets sold in packs, containing more labels per pack than the in-box sheets. The templates in LabelFlex are the same, so any layout you save from printing a PX sheet will print correctly on the AX equivalent.

PX to AX pairings

AX-series sheets are available through all Belden resellers and distributors. Contact your rep or reseller to order. The Silver Fox office does not sell LabelFlex label sheets directly. Any AX-series purchase is a transaction between you and your chosen reseller.

If you find yourself labeling at scale, or you want features beyond what the free Lite tier offers, the Advanced tier adds CSV import for bringing your port IDs straight from a spreadsheet, ANSI/TIA-606-B numbering, and a direct integration with Fluke Networks® LinkWare™ Live and AEM TestPro so your labels match your test results without rekeying. Professional adds barcodes, QR codes, graphics, and locked jobs for teams that share labeling data across projects.

My panel didn't come with a label sheet. What now?

Belden patch panels are shipped with a PX sheet included. If the box was opened before you received it or the sheet was lost, you can order the equivalent AX-series pack through your Belden reseller using the pairings in the table above. The LabelFlex software itself is free to download, so you can still set up the template and print as soon as sheets arrive.

Can I print the PX sheet on a regular inkjet printer?

No. The PX sheets currently shipped in Belden panel boxes are laser only. The label material is formulated for toner fusion, not inkjet ink. Running one through an inkjet will produce a smeared print that won't adhere or hold up in service. One exception exists in the AX range: AX101554, a card-format HD Patch Panel label, is marked as laser or inkjet compatible. All other LabelFlex sheets, PX and AX, are laser only.

The URL on my sheet points to silfox.com. Is that still the right place?

Yes, in that the silfox.com address still redirects to silverfox.co.uk so the link works. But it is the older address. The current canonical locations for the LabelFlex software download are labelflex.io/pages/labelflex-free-trial-download and belden.com/products/labelflex. The sheet itself, the template in the software, and the label dimensions have not changed.

How many labels are on a PX sheet, and is that enough for a 48-port panel?

Every PX SKU ships as a single half-sheet in the panel box, with one header label plus a set number of panel label strips on it. A PX104679 gives you six 24-port strips on the one sheet. Each strip labels a single 24-port KeyConnect panel, so for one 24-port panel you use one strip and have five in reserve for re-labels or MACs. For a 48-port KeyConnect panel you use two strips, leaving four. The PX104680 for AngleFlex and 10GX IDC panels carries five of its per-insert strips, which covers a single panel several times over. If the install is larger than one sheet can handle, order an AX-series pack through your Belden reseller.

Can I use the same LabelFlex template for a PX sheet and an AX sheet?

Yes. The software treats the PX sheet and its AX equivalent as the same template, because the label dimensions and layout are identical. Save your port IDs once and print them to either sheet.

Do PX sheets count toward Belden warranty documentation?

The labeling itself is what matters for warranty purposes, not the specific sheet part number used to print it. Belden's extended and 25-year warranty tiers require certified installation and documented labeling in line with TIA-606. Printing your panel identifiers on the PX sheet, applying them correctly, and retaining the print record contributes to that documentation.