7125G SFP28transceivermoduleCentralwavelength(nm)ConnectorCable/Fibertype anddiameter (μm)Modalbandwidth(MHz × km)Maxtransmissiondistancenegotiationdisabled—40m (131.23 ft)• FECnegotiationenabled—100m (328.08 ft)Table 25 25G SFP28 cables available for the SFP28 ports25G SFP28 cable Cable lengthSFP-25G-D-CAB-1M 1 m (3.28 ft)SFP-25G-D-CAB-3M 3 m (9.84 ft)SFP-25G-D-CAB-5M 5 m (16.40 ft)Figure 71 SFP28 cable(1) Connector (2) Pull latchNOTE:• As a best practice, use H3C SFP28 transceiver modules and cables for the SFP28 ports on theswitch.• The H3C SFP28 transceiver modules and cables available for the SFP28 ports on the switch aresubject to change over time. For the most recent list of SFP28 transceiver modules and cablesavailable for the SFP28 ports, contact your H3C Support or marketing staff.• For more information about H3C SFP28 transceiver modules and cables, see H3C TransceiverModules User Guide.QSFP+ portThe S6520X-54XC-UPWR-SI switch provides fixed QSFP+ ports on the front panel and theLSWM2QP2P interface card provides QSFP+ ports. You can install QSFP+ transceiver modulesin Table 26, QSFP+ cables in Table 27, and QSFP+ to SFP+ cables in Table 28 in the QSFP+ ports.12