S7700 Series S7703/S7706/S7712 02310KVV LE2MGSC40DE0 optical module eSFP-GE-BIDI SM (TX1310/RX1490,40km,LC) The S7700 series switches (S7700 for short) are high-end smart routing switches designed for next-generation enterprise networks. The S7706 chassis is 10 U high (1 U = 44. Figure 4-21 and. ES0Z1B06ACS0 is the Huawei S7706 Basic Engine AC Bundle (Including non-PoE Assembly Chassis, SRUA Main Board*2, 800W AC Power*2). Agile features supported in V200R005C00 and later versions 3. Innovative Cluster Switching System (CSS) 4.