Aruba 3810M all SFP+ ports, need 10GBase-T transceiver

Hi,

We're looking at getting a few Aruba 3810M's (16SFP+ and 24SFP+ models), most of our equipment has DAC ports, however, we have a few devices that have 10GBase-T (RJ45) copper ports.

I was thinking of using HP P/N 813874-B21 as a SFP+/10GBase-T copper transceiver for these devices, however, our reseller is telling us there are absolutely NO 10GBase-T transceivers for the Aruba 3810M?

Has anyone used P/N 813874-B21 in an Aruba 3810M, or can recommend any other 10Gbase-T RJ transceivers that work in a 3810M?

Thanks