What's the difference between S5700-28C-PWR-SI
There are three big difference:
1.Huawei S5700-28C-PWR-EI is 24 10/100/1000Base-T while S5700-28C-PWR-SI is 20 10/100/1000Base-T and 4 GE Combo.
2.S5700-28C-PWR-EI is coming without power supply while S5700-28C-PWR-SI includes single 500W AC power.
3.Their software is different, for difference of 5700 EI and SI.