How to print both side in hp mfp1200w

Do you have hp laser printer? Is your hp printer can print both side pages? Is your hp printer support duplex print? Then in this video you can learn how to print manually duplex in your hp laser printer. In this video i am using hp1200w for manually auto duplex print. But you can follow the same steps for all of yours laser printers.
I have used these for long time for my printer.
Best ink for Hp neverstop amzn.to/3ZuI8R8
This is non magnetic powder suitable for hp neverstop series with very low cost.
If your hp neverstop printer drum has over 20000 page print count, then the imaging drum will be locked any time. Then use new page reset chip amzn.to/46nIRG9

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Thank you. Now i can print both side from my hp 1005