What Is the Difference of EX710-DA4 from X710-DA4?

Is EX710-DA4 different to the X710-DA4 (no leading E) and how it’s different?

• EX710 is the Open Optic SKU of X710. The E is only used to identify it in the Product Code from the other X710 SKUs.
• It designates this X710 as the Open Optics SKU which means that the adapter can be used with other branded modules aside from the Intel brand.
• The EX710 is Original Equipment Manufacturer (OEM) Generic (OEM GEN) only and there is no retail version.