@NewOmadaUser 

I personally havent checked the EAP660, but I know my EAP245 doesnt pull anything near what it is stated.

The 245 is stated to pull 12watt, never seen this above 7watt in reality, could well be the same for the 660 unless you are planning to hammer it hard.   My gut feeling is this should work OK, but sorry no figures to base that on :)

The best thing may be to just go for the SG2210MP as this has a 150watt capability and doesn't cost a whole lot more, may be a safe choice for long term should you decide to add another AP later

for the record, the OC200 pulls around 4watts, its light.

@NewOmadaUser 

My 660 HD uses 7.8 watts 21 client mixed IoT and other. But I agree with @Philbert  buy an SG2210MP it is not much more expensive, the downside is that it is not fanless so it is a bit noisy, so you should think about that before you buy.

Thanks!

worst case, I'll get 2 of them if not enough.

i may need more Port.

Actually I think my design is flaw

- OC200

- 3x EAP

- 2x TL-SG2008P

- Homehub 4000 with 1x 10G port modem

here want I wish to do, but not sure how to wire everything:

1) my modem have 10G port. So I would plug this to 1 of the TL-SG2008P using port 8

2) the same TL-SG2008P using port 1 for OC200

3) the 3 EAP on port 2,3 and 4

4) my NAS to port 5

5) my living room to port 6

6) i should have port 7 empty

can I plug another TL-SG2008P to port 7, so then I will have 7 port more to use?

and will the second SWITCH be less faster ?

im Canada, the cost to get 24 gigabit is expensive. 

@NewOmadaUser 

Hey

You could indeed connect a second 2008P via port 7 and this would work for you, as you mention it will give you an additional 7 ports to use.  I have done this before with the same switch

However bear in mind that the link between the 2x switches will be limited to 1gbps, and the same for the uplink to your Modem.   Although your Modem has a 10GB card, as the switch only supports 1GB it will only connect at 1GB.

I can't see this being an issue for you as the switching capacity of the 2x 2008P switches is sufficient for what you are attempting.   

Yeah 24 port POE switches are expensive here in Ireland too!