Differences between the last two letters in computer models

[azuredave04]

Hello, I noticed that different HP laptop/desktop model names usually have the last two letters  like TU, TX, AU, AX, us, wm, AP, ce, ts, tn, etc. What are they called and what do they mean?

Hope to hear from all of you here! Thank you very much!

[Paul_Tikkanen]

Hi:

The last two letters in the model generally indicates where the model is sold.

What do last 2 letters mean on HP notebook computers? | X Factor of IT (wordpress.com)

I think that a couple of the last letters from the above list have changed in recent times.

no = now denotes PC's sold in Scandinavia, not sc.

[azuredave04]

Hello Paul,

Thank you for your useful information. However, I still have one thing to know about: I have bought HP computers from an official distributor in my region for quite a long time. However, when I opened my machines for services (I am a computer technician), some machines have the "SPS: part number" labelled on all components, some of them have the "Replace with HP spare: part number" on all of the components (from a memory module to the motherboard) and some computers have both the labels although they are opened the first time and come from an HP distributor. So I'm curious whether the second and third group are refurbished models or all groups are the same. Hope to hear from you soon, Paul.

[Paul_Tikkanen]

You're very welcome.

Usually if the PC was refurbished by HP, the last character of the product number before the # sign will be a 'R.'

For example:   5ES85EA#ABA. Not refurbished.   5ES85EAR#ABA. Refurbished by HP.

I think the only part you need to be concerned about on old notebooks when you need to replace the part is the wifi adapter, since any notebook made in 2011 and earlier has a BIOS whitelist.

Most made in 2012 have whitelists, less made in 2013 and almost none made in 2014 and later with few exceptions.

When the need arises to replace a wifi card on one of those models, always buy a card with the part number on the 'Replace with HP spare' label, not the SPS number on the card itself.