Hello Peter,
here it is the complete datasheet of SPA cards
http://www.cisco.com/c/en/us/products/collateral/routers/asr-1002-router/data_sheet_c78-443175.html?cachemode=refresh
here it is the datasheet of the 4FE SPA and 8FE SPA
http://www.cisco.com/c/en/us/products/collateral/interfaces-modules/shared-port-adapters-spa-interface-processors/product_data_sheet0900aecd804dc638.html
With EFM you mean ethernet in the first mile?
https://en.wikipedia.org/wiki/Ethernet_in_the_first_mile
It is not mentioned in the datasheets and I don't think it is supported on ASR1002-X SPA modules.
Hope to help
Giuseppe
