 When delivered in 2012 the initial design capacity was 5.12Tbit/s.An upgrade delivered by Huawei Marine in December 2015 using WDM Soft Decision FEC and bit interleaved coded modulation advanced decoders permitting the design capacity to be increased to 14.5Tbit/s.Instead of powering the 236 undersea optical amplifiers and the 12 Submarine branching units along the cable by a single conductor which would require the voltage to be well over 12,000 to 14,000 V in the order of some 24,000 V DC, the system is supplied by two independent rings from Europe to West Africa and West Africa to South Africa, thus reducing the power requirements to around 12,000 V DC.