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The XC2055 and XC4055 have two SMA connectors to allow easy installation of external WiFi antennas.
SD card / SSD Interface
The µSD card supports UHS-1 SDR-104.
The SSD interface is NVMe, PCIe 3.0 4x.
XC5 players will accept NVMe SSDs in M.2 2242 or 2280 (but not 2260) form factors of SX id type (single-sided form factor). Double-sided drives (DX id type)* will not fit because the back side of the SSD is essentially flush against the motherboard. For example, a 2280-S1 module will fit a BrightSign player but a 2280-D2 module would not.
NVMe drives with heat sinks are not compatible with our players.
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*D4 drives may fit but have not been tested