Reddit reviews Amazon FBA Label (100 Sheets, 4400 Labels) 44-up labels 48.525.4mm on A4 White Self Adhesive Shipping Mailing stickers for Laser/InkJet Printer, Meets Amazons FBA requirements- TOOFUN

Back in the day, I used a cable label printer. It was invaluable when labeling 500+ patch cables at a time. You could program it, and have it auto increment, etc.. etc..

For home use, you probably won't want to spend the cash on a dedicated printer. You could get some labels like these, and print sideways on them. Repeat the text over and over down the label, cut it in half, and wrap one half around each end of the cable. Basically, the home gamer version of these.

Amazon will label products for a fee, but they do so by scanning the existing product barcodes and matching that up to your inventory. Most products have one printed on the packaging.

There are a couple of size options for the printer label templates that Amazon provides. Simplest way is to see for yourself. Create a quick shipment, the labelling page is the third stage I believe. You can see at the bottom of the page the different sizes. These are all for standard A4 printers.

Something like this is the paper you need.

Not my product nor any client of mine. I don't sell on Amazon myself, I work for a company that sells support in selling on Amazon. I don't endorse the seller for the quality of the product or service, they're just the first that came up for me searching. In fact, the listing's a bit crap, clearly breaking multiple rules. Not important. It serves as a good example of the sort of paper you need. You need to match the paper to the template you want to use, so it all lines up properly.