CPU and Motherboard compatibility (LGA1151 and i5 6402p)?

What is the make and model of the motherboard?  I didn't check if the specs are compatible with the CPU, but that's only part of the requirements.  The BIOS on the motherboard must also be compatible with that CPU.

Thanks @compProbsolv here is the details on both (cpu and motherboard)

This link from Intel will give you info on the CPU: https://www.intel.com/content/www/us/en/products/sku/93277/intel-core-i56402p-processor-6m-cache-up-to-3-40-ghz/specifications.html
As you can see, the socket type is FCLGA1151, which is likely what you are mentioning.
It does support DDR4-1866 and -2133.  You weren't specific about the RAM speed.

This Intel site gives CPU compatibility for the H310 chipset: https://www.intel.com/content/www/us/en/products/sku/133348/intel-h310-chipset/compatible.html  It only lists back to 8th generation CPUs and yours is 6th generation.  That may well not work.

The motherboard image and description you posted isn't adequate to answer the question.  I'd ask the vendor for the actual make and model.

ok thanks @CompProbSolv - please let me know if it works before I purchase them online.

It may work but it is not on the compatibility list. Would I use it.. NO 

If the motherboard manufacturer is a well-known and reliable one (e.g. Gigabyte, MSI, ASUS, etc.), then I'd trust their compatibility claims.  Otherwise, I'd agree completely with David.

I am chatting with my supplier now and they confirmed to me that it will work - they have tested and its working.

You said you don't already have these items. So I'd heavily not recommend purchasing them either buy one or the other and not use them together.

If you already had them it would be worth trying as you won't damage anything, it either will work or not.

you can go two routes.. select the cpu you want and then find a compatible motherboard or select the motherboard you want and then select a compatible cpu. 

buying new I'd not pick a 7 year old cpu and a 5 year old motherboard.

What I'd look for in a motherboard is 2 x M.2 slots, 6x SATA 6G, USB 3.1 (or newer) 4x memory slots. DDR4 minimum (maybe even DDR3), PCIE 4

What you want to do is buy the most recent you can afford (today I'd go with a Ryzen cpu over Intel, as you get more bang for the buck).. Previous to Ryzen I stayed away from AMD CPU's 

What you want to do is be able to amortize the cost over the expected  lifetime of of usage.

For instance I chose the Ryzen 2700X cpu in 2018  and a compatible ASUS motherboard (I like the brand open to using MSI) .. Even 5 years later it still does more than need I want (it has USB 3.0 and PCIE3 on the MB)

I havent gotten the cpu and Motherboard. I am currently in contact with them. Yes they are quite old. So what Motherboard is out there perhaps 2 years old - Gigabyte or Asrock what is recommendation?

I dont mind recommending buying a 3 year board and cpu?

recommendations please and model? this is for my client looking for basic word processing (not gaming)

"they have tested and its working": that wouldn't be good enough for me.  I'd still want to know what the manufacturer says.

Did the supplier give you the exact make and model number of the motherboard?  If they refuse, that would be a huge red flag to me.  If they do provide it, I'd want to look into how well regarded the board is.

I think David gave some excellent suggestions.

Ok here is the model number and details of the Motherboard:

So?

So its a very limited no-name motherboard and an old probably refurbished CPU

for $30 ($80USD) more you could geta Ryzen 5 4500 and get 3x the performance.

 https://www.cpubenchmark.net/compare/4816vs2754/AMD-Ryzen-5-4500-vs-Intel-i5-6402P

Sounds like you are building a $200 PC which will not run windows 11 (unsupported cpu and no TPM) that is obsolete from the get go. 

It's hard to be sure without a brand name.  That looks like it may be this one: https://www.ebay.com/itm/334556743677 .  As I mentioned, I'd stick with a brand that  I knew of and had a good reputation.  I've never heard of this one and I find it odd that the vendor isn't telling you the brand name.

There are only 2 RAM slots, one PCI-E slot, and one NVMe slot.  That may be enough for your needs, but it is somewhat limiting.

Do you have any interest in running Windows 11?  As David mentioned, neither the board nor the CPU will.  I would not expect that to ever change.

I'm just awed by the sale the refurbish site has going on now, so I browsed around a little more.  They have 50% off Optiplex 3060's (8th gen Win 11 capable)  and 40% off Optiplex 3070's (9th gen).  You take the percent off at checkout using the coupon code, so its off the price shown for the PCs shown.  

If you click the coupon description line, it will show you those models available.  Their supplies are limited and the best performance PCs tend to sell out 1st, in my past experience with them.

See: https://www.dellrefurbished.com/desktop-computers?model_f[]=OptiPlex%203060&processor_type[]=8th%20Gen%20Intel%20Core%20i5

Thank you all for these valued points. I really appreciated. In fact, one of the reasons why I brought this up is because I am wanting to know what is my best options and most economical for all our clients when building their computers. One highlight is brought here is by @fred hakim thank you so much for pointing out the dell refurbished site. I see there is huge benefits for us. I have sent them an email for us to open an account to become resellers (since we are computer repair business). Since we are outside the US, I might need a decent air Freight Forwarders since we are in the Island. So thank you so much again fred hakim and I think I will consider purchasing refurbished computers from Dell refurb team for all my clients.

I would also ask if there is another place who offers refurbished Monitors as I checked Dell refub does not have any. Please if any could share details too since fred hakim have just opened my mind to go this route. Please if you experts can advise / guides me with directions for their website or contact details I would appreciate.

And lastly, would you know too a decent US freight forwarder (I know one which is myus.com) but would love to hear other recommendations as well on freight services who can send internationally.

As for my original post I am thankful I raised it because now I have found some valuable points from it.

Please let me know.

Grateful

Fred makes an excellent case for looking at Dell refurbished systems.  You'll save a lot of time going that way rather than building your own.

I've bought refurbished computers from TigerDirect.com .  There are many to choose from, not all seem like good deals.  It's still a place to check.

I know it creates more work, but if the system has a hard drive (vs. SSD), consider installing an SSD in its place.  They are inexpensive and can make a major difference in performance.

Yes I am checking that too @compprobsolv, thank you so much...my only concern here is the Freight forwarder from the US...any recommendations?

Thank you guys.

Dell refurb is always having sales and coupons for items they are trying to clear out.  If register, you will get a newsletter announcing them.  Also, there are clearance and coupon tabs on the site.  And don't forget to search the "no OS" PCs.  

I hope things work out for you, but I know for bulk sales Dell says U.S. companies only, no freight forwarders.  (check the bulk sales link at the bottom of the page).