# What is the required iScan Control Software version and scan setting for Infinium EX BeadChips?

* Infinium EX BeadChips are compatible with iScan Control Software (ICS) **version 4.2.1**.
* Use the **Infinium EX** scan setting to scan EX BeadChips.
* The Illumina Field Service Engineer must perform the control software upgrade; ICS is not customer-installable.

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