The QImaging® Rolera-MGi Plus back-illuminated EMCCD camera combines >90% QE with the convenience of FireWire IEEE-1394. The Rolera-MGi Plus features the 512 x 512 L3Vision frame-transfer EMCCD from e2v Technologies, enabling charge to be multiplied before readout in order to provide fast detection for low-light-level applications. Capable of capturing 300+ frames per second with binning and ROI, the Rolera-MGi Plus allows single-photon detection for applications such as live-cell confocal microscopy.