ASROCK Z87 Extreme9/ac User Manual page 22

ASRock Wi-SD Box
Thanks to the excellent placement of antennas, ASRock Wi-SD Box comes with two
invisible antennas (placed in a vertical/horizontal position), hidden inside the front
panel that provides the most stable and unrestricted-direction wireless network
coverage, optimized for maximum broadband network. Additionally, it provides
four Front USB 3.0 ports for easier USB 3.0 device access, 1 SD Card slot and 1 rack
for SSD placement.
ASRock Wi-SD Box
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