How to find out the cache size?

Dear WD Community!

Could you tell me, how to find out cache size of WD My Passport Ultra especially 2.5 1 TB Usb 3.0 WDBGPU0010BBK(-EESN)?
I have been searching for it a long time. I can not find anyithing on WD’s webpage, users manual…
I would like to buy this one, and it would be really useful to find out the cache size.

Thank you,

Hello,

This information is not displayed in the Product Overview (PDF)

I recommend you contact WD Support directly to get this kind of information.

Thank you for your answer, I wrote an e-mail to WD Support.I am Waitin for the answer.