SMXA/5 A51 is ZTE switching and control card applied to ZTE OLT ZXA10 C320 which supports 128 Gbps switching capacity, 32k MAC address table.
SMXA/5 A51 comes with pinch card UCDC5 which provides 1 10GE and 1 GE uplink ports.

SMXA (A31) is ZTE switching and control card applied to ZTE OLT ZXA10 C320 which supports 128 Gbps switching capacity, 32k MAC address table.
SMXA comes with pinch card UCDC3 which provides 1 10GE and 1 GE optical uplink ports and 1XGE electrical uplink port.

In stcok! New and original brand SCTM Control Board use for ZXA10 C300 OLT,
supports 2.56 Tbit/s switching capacity and 256 K MAC address table.
4*10GE uplink interfaces